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Salvation in the Block Universe
- Time, Tillich, and Transformation
- Emily Qureshi-Hurst
- Foreword by Alister McGrath
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- August 2024
- Print publication:
- 31 August 2024
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Does time really pass? Should theology mould itself to fit with the findings of physics and philosophy? How should the interdisciplinary dialogue between science and religion proceed? In Salvation in the Block Universe, Emily Qureshi-Hurst tackles these important questions head-on. She offers a focused treatment of a particular problem – the problem of salvation in the block universe – and a broader exploration of a theological methodology that makes 'science and religion' not only possible but desirable via Paul Tillich's method of correlation. By bringing time and salvation into dialogue, Dr Emily Qureshi-Hurst's original insights move the 'science and religion' conversation forward into new and productive territory. Qureshi-Hurst also provides tools for other theologians and philosophers to do the same. Essential reading for anyone interested in the interactions between philosophy, religion, and science, she asks: without the reality of change, is personal salvation during one's lifetime even possible?
Made in China: When US–China Interests Converged to Transform Global Trade Elizabeth O'Brien Ingleson. Cambridge, MA: Harvard University Press, 2024. 352 pp. £29.95 (hbk). ISBN 9780674251830
- William Hurst
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- The China Quarterly , First View
- Published online by Cambridge University Press:
- 20 May 2024, pp. 1-2
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Micronutrient intake from complementary foods of Asian New Zealand infants
- C. Hall, C. Conlon, J. Haszard, R. Taylor, K. Beck, P. von Hurst, L. Te Morenga, A-L. Heath
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- Journal:
- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E150
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The complementary feeding period (6-23 months of age) is when solid foods are introduced alongside breastmilk or infant formula and is the most significant dietary change a person will experience. The introduction of complementary foods is important to meet changing nutritional requirements(1). Despite the rising Asian population in New Zealand, and the importance of nutrition during the complementary feeding period, there is currently no research on Asian New Zealand (NZ) infants’ micronutrient intakes from complementary foods. Complementary foods are a more easily modifiable component of the diet than breastmilk or other infant milk intake. This study aimed to compare the dietary intake of micronutrients from complementary foods of Asian infants and non-Asian infants in NZ. This study reported a secondary analysis of the First Foods New Zealand cross-sectional study of infants (aged 7.0-9.9 months) in Dunedin and Auckland. 24-hour recall data were analysed using FoodFiles 10 software with the NZ food composition database FOODfiles 2018, and additional data for commercial complementary foods(2). The multiple source method was used to estimate usual dietary intake. Ethnicity was collected from the main questionnaire of the study, answered by the respondents (the infant’s parent/caregiver). Within the Asian NZ group, three Asian subgroups were identified – South East Asian, East Asian, and South Asian. The non-Asian group included all remaining participants of non-Asian ethnicities. Most nutrient reference values (NRV’s)(3) available for the 7-12 month age group are for total intake from complementary foods and infant milks, so the adequacy for the micronutrient intakes from complementary foods alone could not be determined. Vitamin A was the only micronutrient investigated in this analysis that had an NRV available from complementary foods only, allowing conclusions around adequacy to be made. The Asian NZ group (n = 99) had lower mean group intakes than the non-Asian group (n = 526) for vitamin A (274µg vs. 329µg), and vitamin B12 (0.49µg vs. 0.65µg), and similar intakes for vitamin C (27.8mg vs. 28.5mg), and zinc (1.7mg vs. 1.9mg). Mean group iron intakes were the same for both groups (3.0mg). The AI for vitamin A from complementary foods (244µg) was exceeded by the mean intakes for both groups, suggesting that Vitamin A intakes were adequate. The complementary feeding period is a critical time for obtaining nutrients essential for development and growth. The results from this study indicate that Asian NZ infants have lower intakes of two of the micronutrients of interest than the non-Asian infants in NZ. However, future research is needed with the inclusion of infant milk intake in these groups to understand the total intake of the micronutrients. Vitamin A intakes do appear to be adequate in NZ infants.
Processed vegan food packaging: influencing vegan diet and lifestyle consumption choices
- Z. Johnson, R. Batty, P. von Hurst
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- Journal:
- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E192
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As the demand for plant-based meat analogues (PBMAs) continues to surge globally, understanding the marketing strategies that drive consumer choice becomes imperative(1). This research project, part of a larger study at Massey University, explores the design and packaging of vegan food products, specifically focusing on processed PBMAs and how this influences vegan diet consumption choices in New Zealand vegans. We examined the packaging of vegan processed food available in New Zealand supermarkets and those promoted online, with a focus on processed PBMAs. This informed the development of an online survey including: demographics, motivations for following a vegan diet, and questions related to perceptions and preferences about vegan diets and processed PBMA packaging. The survey was offered to individuals who had previously participated in vegan research at Massey University and followed a strict vegan diet. There were 235 participants of whom 198 completed the survey. This consisted of primarily females (n = 156, 74%) and individuals of New Zealand European descent (n = 159, 71%), aged 18 to 76 years (37.8 ± 12.3). The participants had varying durations of following a vegan diet, with the largest group (n = 87, 42%) adopting it for 5 to 10 years. The primary motivation for following a vegan diet was animal welfare (n = 205), followed by environmental concerns (n = 189) and health (n = 175). Participants were able to select more than one option, suggesting there are often multiple reasons for choosing to follow a vegan diet. Factors influencing purchase decisions for PBMAs included nutrient claims on packaging, with protein having the highest positive influence. Environmental concerns also played a significant role, with eco-friendly packaging and positive environmental claims being important. Packaging images, particularly of the final prepared product, had a significantly positive impact on purchasing decisions (4.12 ± 0.78) where 1 represented a negative influence and 5 represented a positive influence on a Likert Scale. The majority sometimes, or always checked the nutrition information panel (n = 167, 85%) and examined the ingredients (n = 191, 98%). Participants reported concern about the nutritional value of processed PBMAs (n = 94), and reported that they are aware that these foods are classified as ‘ultra-processed (n = 91). This research provides valuable insights into the reasons people choose vegan diets and what influences their choices when it comes to purchasing PBMAs. It highlights the significance of marketing strategies in the plant-based meat alternatives industry. However, to gain a more comprehensive understanding of this evolving market, further research is necessary. Future research should consider a wider range of demographics and regional distinctions to better understand how consumer preferences in plant-based diets are changing. This should also include looking at how the market is maturing, with buyers becoming more aware of things like nutrients and the processing of food, which can impact the sustainable food choices individuals make.
The metabolic health of New Zealand vegans
- L. Hill, C. Conlon, H. Mazahery, K.L. Beck, K. Mumme, R. Batty, P. von Hurst
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- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E179
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The popularity of a vegan diet is growing worldwide. Data analysed from the 2018 NZ Attitudes and Values study showed that 1.1% of New Zealanders followed a vegan diet(1). Though there are potential nutrient deficiencies in a vegan diet, it is generally accepted that a vegan diet, with its emphasis on a variety of vegetables, fruit, grains, legumes, and pulses, has greater metabolic benefits than a Western-style diet high in red meat and processed foods and lower in plants(2). This observational cross-sectional study aimed to explore the dietary intake (4-day food diary) and metabolic health status (including anthropometry, blood pressure, lipids, body fat percentage, omega-3 index and glycaemic control) of adults who had been consuming a vegan diet for 2+ years. Participants (N = 212) were predominantly female (N = 155) with a mean (SD) age of 39.5 (12.4) years. Mean cardiometabolic markers of systolic and diastolic blood pressure, BMI, waist circumference, HbA1c, total cholesterol, LDL-cholesterol, HDL-cholesterol, Chol:HDL ratio and triglycerides were all below the thresholds for disease risk. Omega-3 index results <4% placed most participants (86.3%) in the high-risk category for heart disease. Many female participants (71%) had >30% body fat, compared to 5.3% of males. With reference to the AMDR (total fat 20-35%, carbohydrate 45-65% and protein 15-25%), the intake of total fat was at the upper end (males 34.4%, females 35.9%), carbohydrate was at the lower end (males 46.2%, females 44.7%), and protein was below the lower end (males 14.9%, females 14.2%). Saturated fat intakes ranged from 4.0-65.9 g/d, with a mean (SD) of 24.9 (10.5) g/d for males and 20.2 (9.9) g/d for females. The mean (SD) dietary fibre intake was much higher than the AI set by the Ministry of Health of 25g/d for females and 30g/d for males, at 55.0 (17.8) g/d for males and 43.4 (12.8) g/d for females, ranging from 10.9-133.9g/d. This is the first New Zealand study to examine the metabolic health and dietary intake of adult vegans. The results of cardiometabolic health markers indicate that the vegan diet confers cardioprotective benefits. However, the low Omega-3 index of most participants is concerning, which warrants longitudinal research to assess the level of risk conferred by a low Omega-3 index result in a population with no other cardiometabolic risk factors. The findings of the present study may help guide the growing New Zealand vegan community towards a nutritionally optimal vegan diet.
Parent-reported offering of allergen foods to infants during complementary feeding: an observational study
- J. Medemblik, C. Conlon, J. Haszard, A-L. Heath, R. Taylor, P. von Hurst, K. Beck, L. Te Morenga, L. Daniels
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- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E151
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The prevalence of food allergies in New Zealand infants is unknown; however, it is thought to be similar to Australia, where the prevalence is over 10% of 1-year-olds(1). Current New Zealand recommendations for reducing the risk of food allergies are to: offer all infants major food allergens (age appropriate texture) at the start of complementary feeding (around 6 months); ensure major allergens are given to all infants before 1 year; once a major allergen is tolerated, maintain tolerance by regularly (approximately twice a week) offering the allergen food; and continue breastfeeding while introducing complementary foods(2). To our knowledge, there is no research investigating whether parents follow these recommendations. Therefore, this study aimed to explore parental offering of major food allergens to infants during complementary feeding and parental-reported food allergies. The cross-sectional study included 625 parent-infant dyads from the multi-centred (Auckland and Dunedin) First Foods New Zealand study. Infants were 7-10 months of age and participants were recruited in 2020-2022. This secondary analysis included the use of a study questionnaire and 24-hour diet recall data. The questionnaire included determining whether the infant was currently breastfed, whether major food allergens were offered to the infant, whether parents intended to avoid any foods during the first year of life, whether the infant had any known food allergies, and if so, how they were diagnosed. For assessing consumers of major food allergens, 24-hour diet recall data was used (2 days per infant). The questionnaire was used to determine that all major food allergens were offered to 17% of infants aged 9-10 months. On the diet recall days, dairy (94.4%) and wheat (91.2%) were the most common major food allergens consumed. Breastfed infants (n = 414) were more likely to consume sesame than non-breastfed infants (n = 211) (48.8% vs 33.7%, p≤0.001). Overall, 12.6% of infants had a parental-reported food allergy, with egg allergy being the most common (45.6% of the parents who reported a food allergy). A symptomatic response after exposure was the most common diagnostic tool. In conclusion, only 17% of infants were offered all major food allergens by 9-10 months of age. More guidance may be required to ensure current recommendations are followed and that all major food allergens are introduced by 1 year of age. These results provide critical insight into parents’ current practices, which is essential in determining whether more targeted advice regarding allergy prevention and diagnosis is required.
Exploring the concerns, attitudes and experiences of health professionals regarding a vegan diet during pregnancy and early life; a mixed-method study
- B.X.P. Soh, P. von Hurst, R. Batty, C. Conlon
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- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E113
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Vegan diet consumption is gaining popularity globally and in New Zealand. However, plant foods provide absent or limited quantities of important micronutrients such as vitamin B12, iron, zinc, and omega-three fatty acids(1). A restrictive and unplanned vegan diet may thus increase risks of nutrient deficiencies especially during pregnancy and early life if the nutrient demands are not fulfilled. Health professionals who provide primary support for pregnant women and their children are important figures in monitoring the nutritional statuses during the antenatal and postnatal periods(2). (Being knowledgeable about the nutritional risks of poorly-planned vegan diets, and having access to appropriate educational resources would support vegan mothers and children to achieve a well-balanced diet. Currently, there are insufficient studies investigating the perspectives of New Zealand’s health professionals within the realm of vegan diets during pregnancy and early life. The aim of the research is to utilise a mixed-methods approach to explore these concerns, attitudes, and experiences. Healthcare professionals, including dietitians, nurses, general practitioners and midwives were invited to participate in the study. Knowledge and attitude scores were collected with an online questionnaire and scores were recorded as a proportion of the participants. Subsequently, descriptions of experiences, concerns, and perspectives about the adoption of vegan diets during pregnancy and early life were collected with semi-structured interviews. A total of 14 health professionals completed the study. All health professionals showed positive attitudes towards the adoption of vegan diets during pregnancy but some exhibited greater concern about their restrictive nature especially in early childhood. Achieving intake adequacy and subjecting young children to intensive assessments for nutrient adequacy were among the concerns raised. More than 90% of health professionals were concerned about iron and vitamin B12 deficiencies while less than 50% were concerned about deficiencies in protein, omega-three fatty acids, iodine, zinc and vitamin D. Less than 50% of participants were aware that plant foods do not provide sufficient vitamin B12. More than 50% disagreed that sufficient information about vegan diets during pregnancy and early life is available. Insufficient evidence-based consensus and government guidelines, and limited access and referrals to dietitians for guidance on vegan diets were highlighted as challenges that reduce the overall knowledge and confidence. Hence, continual professional education and updated evidence-based resources would be important steps to support health professionals in providing guidance to individuals on vegan diets.
Household food insecurity and associations with energy, nutrient intake, and sociodemographic characteristics in young New Zealand children
- R. Jupiterwala, C. Conlon, K. Beck, R. Taylor, A-L. Heath, J. Haszard, I. Katiforis, R. Paul, K. Brown, M. Casale, E. Jones, A. Wei, L. Fangupo, B. Bruckner, V. Pulu, M. Healy, P. von Hurst
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- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E85
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Although food insecurity affects a significant proportion of young children in New Zealand (NZ)(1), evidence of its association with dietary intake and sociodemographic characteristics in this population is lacking. This study aims to assess the household food security status of young NZ children and its association with energy and nutrient intake and sociodemographic factors. This study included 289 caregiver and child (1-3 years old) dyads from the same household in either Auckland, Wellington, or Dunedin, NZ. Household food security status was determined using a validated and NZ-specific eight-item questionnaire(2). Usual dietary intake was determined from two 24-hour food recalls, using the multiple source method(3). The prevalence of inadequate nutrient intake was assessed using the Estimated Average Requirement (EAR) cut-point method and full probability approach. Sociodemographic factors (i.e., socioeconomic status, ethnicity, caregiver education, employment status, household size and structure) were collected from questionnaires. Linear regression models were used to estimate associations with statistical significance set at p <0.05. Over 30% of participants had experienced food insecurity in the past 12 months. Of all eight indicator statements, “the variety of foods we are able to eat is limited by a lack of money,” had the highest proportion of participants responding “often” or “sometimes” (35.8%). Moderately food insecure children exhibited higher fat and saturated fat intakes, consuming 3.0 (0.2, 5.8) g/day more fat, and 2.0 (0.6, 3.5) g/day more saturated fat compared to food secure children (p<0.05). Severely food insecure children had lower g/kg/day protein intake compared to food secure children (p<0.05). In comparison to food secure children, moderately and severely food insecure children had lower fibre intake, consuming 1.6 (2.8, 0.3) g/day and 2.6 (4.0, 1.2) g/day less fibre, respectively. Severely food insecure children had the highest prevalence of inadequate calcium (7.0%) and vitamin C (9.3%) intakes, compared with food secure children [prevalence of inadequate intakes: calcium (2.3%) and vitamin C (2.8%)]. Household food insecurity was more common in those of Māori or Pacific ethnicity; living in areas of high deprivation; having a caregiver who was younger, not in paid employment, or had low educational attainment; living with ≥2 other children in the household; and living in a sole-parent household. Food insecure young NZ children consume a diet that exhibits lower nutritional quality in certain measures compared to their food-secure counterparts. Food insecurity was associated with various sociodemographic factors that are closely linked with poverty or low income. As such, there is an urgent need for poverty mitigation initiatives to safeguard vulnerable young children from the adverse consequences of food insecurity.
Effect of acute supplementation with New Zealand berry anthocyanin-enriched drink on repeated sprint performance in recreationally active males
- K. Nanavati, K. Vitzel, K. Rutherfurd, R. Hurst, A. Ali
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- Journal:
- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E149
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Consumption of 300 mg of a New Zealand berry extract containing 105 mg anthocyanins for 7 days has been shown to increase running distance during repeated sprints to exhaustion(1). The supplemented group also displayed higher blood lactate concentration over the first thirty minutes of recovery time(1). However, there is limited research available on the acute effects of berry-derived anthocyanins on sports performance. We aimed to evaluate the effect of a single dose of 12 g of a New Zealand berry anthocyanin-enriched powder (NZBP) supplement containing 120 mg of anthocyanins on sprint performance in a randomised controlled crossover trial using the modified Loughborough Intermittent Shuttle Test (m-LIST). The m-LIST protocol consisted of 6 x 15-min blocks divided into four blocks of “prescribed-pace” activity (blocks 1 - 4) (participants exercise based on audible signals) followed by two blocks of “self-paced” (blocks 5, 6) running (no audible signals) with a 3-min rest period between each block. Each block consisted of repeated sequences of 3x20 m walks at 5.4 km/h, 1x15 m sprint, 3x20 m run and 3x20 m jog. Fourteen recreationally active males (mean ± SD age: 29.53 ± 9.35 years, height: 170.84 ± 24.13 cm, weight: 76.24 ± 8.26 kg, V˙O2max: 46.64 ± 4.40 mL∙kg-1∙min-1) participated in three indoor sessions. The first session focused on a multistage fitness test (beep test) to determine V˙O2max and the run and jog prescribed speeds for blocks 1 to 4. For the main trial visits (minimum 7-day wash-out period in between), participants consumed a body weight adjusted standardised dinner (lasagna, garlic bread, banana, and salad greens) and arrived at the laboratory fasted the next morning (between 6-7:30 am). They then consumed the study supplement (NZBP supplement or placebo mixed with 100 ml water) along with the standardised breakfast (100 g yogurt, 50 g granola, and 30 ml milk). One hour after breakfast the participants undertook a 10-min standardised warm-up, followed by the m-LIST protocol. No significant differences (two-way repeated measures ANOVA; p = 0.286) were found in average sprint speed from blocks 1 to 6 within or between NZBP and placebo groups. No effect of supplementation and no interaction effect was observed for sprint distance, sprint time, heart rate, reaction time, movement, or blood lactate concentration. The observed changes induced by repeated sprints on ratings of feeling scale, felt arousal scale, and perceived exertion (p = <0.001, all) were also not affected by supplementation (p = 0.679, p = 0.288, p = 0.327 respectively). Thus, an acute dose of NZBP containing 120 mg anthocyanins under the conditions reported here did not improve repeated sprint performance in recreationally active males.
The effect of motivation type on intake and nutritional status of vitamin B12, omega-3 fatty acids, iron and nutrition knowledge in individuals following a vegan diet
- R. Pearce, C. Conlon, K. Beck, K. Mumme, H. Mazahery, R. Batty, P. von Hurst
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- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E136
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The fundamental principle of veganism is to avoid all possible animal exploitation and therefore, animal ethics has always been a primary motivator. Nowadays, the environment and health are also common motivators. Omission of all animal products leads to dietary exclusion of vitamin B12, limited intake of omega-3 fatty acids, specifically EPA and DHA, and intake of low bioavailable iron sources1. Obtaining the knowledge to appropriately plan and replace nutrients through food or supplementation is key to avoiding deficiencies and subsequent consequences. This study aimed to determine the effect of motivation for being vegan on intake of key nutrients and nutritional knowledge. This cross-sectional, observational study recruited participants, who had followed a vegan diet for minimum 2 years. Demographics and nutrition knowledge were obtained from questionnaires. Motivation type was determined using the validated vegetarian eating motives inventory (VEMI) – participants scored the importance of animal ethic, environment and health. Intakes of vitamin B12 and iron, were collected using a 4-day food diary and assessed against Estimated Average Requirement (EAR). Blood samples were taken to determine status of vitamin B12, haemoglobin, serum ferritin, and omega-3 index. Omega-3 index score ≤4 indicates increased risk of coronary heart disease. Animal ethics was the greatest motivator to become vegan, with 83.5% of participants scoring it as very important, compared to 71.7% of people stating the environment, and 53.3% stating health. No association was found between all motivation types and intake of vitamin B12 and iron, nor omega-3 index. Mean vitamin B12 intake (supplements excluded) of 2.11ug/day ± 3.43 exceeded the EAR of 2.0ug/day for both men and women, however intakes ranged between 0.00 and 37.63ug/day. Mean intake of iron (18.77mg/day) exceeded the EAR for both men and women. Overall mean omega-3 index was 3.16%. Both men (162.24g/L) and women (151.44g/L) had adequate mean Hb serum concentrations. Mean serum ferritin was within normal range for both men (64.86ug/L ± 43.48) and women (32.55ug/L ± 26.04). Overall mean serum vitamin B12 was within normal range (316.54pmol/L ± 146.18), however a large range was observed from 72.00pmol/L to 1,015pmol/L. Males and females had similar knowledge, with only one question regarding fibre content in cornflakes found to be significantly different (P = 0.012). Knowledge was varied e.g., 100% of participants could identify that pasta was a carbohydrate source, yet could not identify which fats are most important to reduce. Mean vitamin B12 intake exceeding EAR and normal status despite limited vegan sources, indicates high consumption of high bioavailable fortified foods, and supplementation. Iron status shows large consumption of iron rich foods to overcome bioavailability issues, reflected by adequate iron intake, after increasing EAR by 80% to meet recommendations. The mean omega-3 index shows a low cardioprotective omega-3 fatty acid intake.
Evaluation of the potential implications of following a vegan diet on bone health
- A. Clark, M.C. Kruger, H. Mazahery, C. Conlon, K.L. Beck, K. Mumme, R. Batty, P.R. von Hurst
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- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E180
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Cow’s milk is the primary source of calcium in the NZ diet(1). The absence of dietary planning in a vegan diet can result in the individual unknowingly obtaining low intakes of calcium. Prolonged low calcium intakes can result in negative implications on bone mineral density by increasing the risk of osteoporosis later in life. The measurement of bone health parameters in NZ vegan adults have not been investigated. Therefore, we measured bone mineral density, markers of calcium homeostasis and assessed intake of essential nutrients for optimal bone health in vegans. This cross-sectional study included adults (>18yrs), who followed a vegan diet for 2 years minimum. Demographic and lifestyle information was obtained from questionnaires including previous history of bone fractures and background of familial osteoporosis. A 4-day food record was completed for analysis of calcium, zinc, protein, magnesium, phosphorus and vitamin C intake and compared to the Estimated Average Requirement (EAR)(2). Weight, height and BMI were obtained, bone mineral density was measured at the hip and spine via dual x-ray absorptiometry (DXA) and reported as Z and T scores. Plasma calcium concentrations were corrected for albumin. All values are presented as mean and standard deviation. The study included 212 participants, aged 39 ± 12.38 years, 71% female. T scores at the lumbar spine and femoral neck were −0.63 ± 1.22 (Z score: −0.29 ± 1.12) and −0.66 ± 1.00 (Z score: −0.24 ± 0.89), respectively. Nine participants had a Z-score of <-2.0 at the lumbar spine, and three at the femoral neck. Corrected calcium concentrations were 2.21 ± 0.33 mmol/L. Calcium intake was 917 ± 347.23 (range 195 to 2,429 mg/day) in all participants, which exceeded the EAR of 840 mg/day for adults aged 19-50 years. Men had higher intakes of calcium than women, 1,051 ± 363.7 mg/day (range 382 to 2,267 mg/day) vs. 867 ± 328.04 mg/day (range 194 to 2,428 mg/day), P-value <0.001. The main source of calcium in the vegan diet was tofu. The intake of protein (77 ± 27.80) g/day, magnesium (569 ± 181.05) mg/day, and vitamin C (145 ± 96.94) mg/day met the EAR, excluding vitamin and mineral supplements. However, the intake of phosphorus (1,472 ± 459.98) mg/day and zinc (10.6 ± 4.01) mg/day were below the EAR. The findings of this study suggest that bone health of vegans are not negatively affected by the exclusion of dairy in the diet, provided that appropriate dietary planning is included to avoid nutrient deficiencies associated with poor bone health. Despite mean intake of calcium exceeding the EAR, very low intakes demonstrated significant variations between participants.
An audit of plant-based, ultra processed vegan foods in New Zealand
- A.J. Czifra, R. Batty, K.L. Beck, P.R. von Hurst
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- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E31
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As concerns grow about the impact of animal farming on the environment, the appeal of plant-based diets has increased(1). The most extreme of these diets is the vegan diet which excludes all animal and insect sourced products. The vegan diet is often lauded as being beneficial for cardiovascular health, with the exclusion of saturated fats from animal meats, and the high intake of fibre from fruit and vegetables. More lately, however, there has been an exponential increase in the availability of vegan ultra-processed (UPFs), ready to eat foods which may not be so heart healthy. This study aimed to audit the vegan-labelled, plant-based meat and dairy analogues (PBMAs and PBDAs) available in New Zealand supermarkets. The objective was to compare the nutrient content against foods of animal origin that these products emulate. The audit was completed between March and June 2022 using a combination of on-site data collection and online sources. Data were collected from New Zealand’s five major supermarkets, Countdown, Fresh Choice, New World, Pak’nSave and Four Square. The audit recorded vegan and plant-based labelled products imitating animal meats (chicken, mince, beef, sausage, burgers, bacon, nuggets), and dairy (milk, cheese, yoghurt). Nutrient composition was taken from the Nutrition Information Panel (NIP) for each product and then a mean (SD) derived from a sample of each category. Nutrient composition for the comparison meat and dairy products was taken from NZ FOODFiles(2). All nutrients were reported per 100g or100ml. The PBMAs generally had higher energy, sodium and fibre, and lower protein than their meat counterparts. For example, plant-based burgers compared with beef burgers had 863kJ vs 761kJ energy, 436g vs 130g sodium, 2.3g vs 1.2g fibre, 15g vs 19g protein per 100g. Total fat and saturated fat were mostly lower in the meat products than in PBMAs, except for sausages. The plant-based milk analogues were lower in protein and fat than dairy milk, except soy (protein) and coconut (fat) milks. PBDAs were either completely lacking in calcium or were fortified to a similar level as dairy milk. Most plant-based cheeses and yoghurts were not fortified with calcium and were higher in energy, total fat and saturated fat than dairy. Vitamin B12 fortification of all plant-based products varied widely but contained less than meats and dairy. The wide range of plant-based UPFs included in this audit demonstrated little or no health advantage over animal derived meats and dairy products. The high salt and saturated fat content of these products suggest increased cardiometabolic risk if consumed as a regular part of the vegan diet despite higher fibre content.
Perspectives of staff and clients regarding the delivery of nutrition information in Green Prescription: a qualitative inquiry
- C. Pendergrast, C. Conlon, K. Beck, B. Erueti, P. von Hurst
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- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E167
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In New Zealand, the community-based service, Green Prescription (GRx), has a preventative health focus, supporting clients to make lifestyle changes including improving nutrition literacy, which is known to improve health and reduce chronic disease risk and outcomes (1,2). Fourteen GRx services operate in New Zealand, each with staff who have backgrounds in health and/or exercise. Some staff are degree-qualified nutritionists and/or dietitians. Responsibilities of staff may include providing clients with information about nutrition. We aimed to identify the extent of nutrition information delivery in GRx including successes, challenges, and perspectives of staff and clients. An invitation was extended to all 14 GRx services inviting participation from both staff and clients. Semi-structured interviews were conducted with a convenience sample of 15 GRx staff and 18 clients, representing nine and five GRx services respectively. Interviews were completed in-person, over video call, and by phone. Responses from clients and staff revealed both positive and challenging aspects of nutrition information delivery from GRx services. Thematic analysis identified factors that enhance or diminish the delivery of nutrition information including capacity of staff and appropriateness of information. One theme highlighted was expectations from both clients and staff about what is needed, beneficial and feasible. An expectation identified was for GRx staff to provide meal plans and tailored nutrition advice. Provision of this is dependent on the capacity of nutrition-qualified staff as well as confidence of non-nutrition-qualified staff delivering information beyond basic nutrition guidelines. Client respondents reported they benefit from nutrition information but are challenged when their dietary needs require more specific input, which may be beyond the capacity of GRx. From a staff perspective, there is an expectation that clients possess a certain level of basic nutrition literacy and the effect of nutrition on health. However, staff responses identified there is a vast range of nutrition knowledge among clients; limited foundational knowledge, while simultaneously having in-depth understanding of certain nutrition topics. Provision of information is further complicated by misconceptions about nutrition and limited knowledge about specific health conditions where nutrition plays a significant role. Factors that impact the practical implementation of eating more healthfully were identified by both clients and staff, demonstrating there needs to be both sensitivity and adaptability about what is feasible for clients and achievable in GRx service delivery. Greater focus on determining the nutrition literacy a person has and communicating what is practical in both service delivery and clients’ circumstances would aid in aligning the expectations of supporting clients well with nutrition education and enhance available resources within Green Prescription services.
Dehydroxylation, Rehydroxylation, and Stability of Kaolinite
- Vernon J. Hurst, Albert C. Kunkle
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- Clays and Clay Minerals / Volume 33 / Issue 1 / February 1985
- Published online by Cambridge University Press:
- 02 April 2024, pp. 1-14
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From hydrothermal experiments three pressure-temperature-time curves have been refined for the system Al2O3−SiO2−H2O and reversal temperatures established for two of the principal reactions involving kaolinite. The temperatures of three isobaric invariant points enable the Gibbs free energy of formation of diaspore and pyrophyllite to be refined and the stability field of kaolinite to be calculated. The maximal temperature of stable kaolinite decreases from 296°C at 2 kb water pressure to 284°C at water's liquid/vapor pressure, and decreases rapidly at lower pressures. On an isobaric plot of [H4SiO4] vs. °K-1, kaolinite has a wedge-shaped stability field which broadens toward lower temperature to include much of the [H4SiO4] range of near-surface environments. If [H4SiO4] is above kaolinite's stability field and the temperature is < 100°C, halloysite forms rather than pyrophyllite, an uncommon pedogenic mineral. Pyrophyllite forms readily instead of kaolinite above 150°C if [H4SiO4] is controlled by cristobalite or noncrystalline silica.
Kaolinite and a common precursor, halloysite, are characteristic products of weathering and hydro-thermal alteration. In sediments, relatively little halloysite has survived due to its low dehydration temperature and instability at low water pressure, but kaolinite commonly has survived since the Devonian Period. In buried sediments, the water pressure and [H4SiO4] requisite for stable kaolinite generally are maintained. In oxidized sediments and in pyritic reduced sediments, kaolinite commonly has survived, but where alkalies, alkaline earths, or aqueous iron has concentrated in the pore fluid, kaolinite has tended to transform to illite, zeolites, berthierine, or other minerals.
Activism across Borders: A Human Rights Perspective
- Part of
- Mark Hurst
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- Journal:
- International Review of Social History / Volume 69 / Issue 1 / April 2024
- Published online by Cambridge University Press:
- 11 March 2024, pp. 147-155
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Daniel Laqua's recent monograph Activism across Borders Since 1870: Causes, Campaigns and Conflicts in and beyond Europe raises a number of pertinent issues for historians of human rights to reflect upon. This article takes the four analytical lenses highlighted by Laqua for assessing transnational activism and applies them to cases of human rights activism in the Cold War and post-Cold War era. In doing so, this article argues that Laqua's framework offers much scope for historians to approach the history of human rights activism with a more critical edge. It also highlights the challenge of retaining an analytical focus on an issue as emotive and complex as human rights, and how Laqua's lenses may offer a practical methodology to do this.
Residue analysis suggests ritual use of tobacco at the ancient Mesoamerican city of Cotzumalhuapa, Guatemala
- Adam Negrin, Oswaldo Chinchilla Mazariegos, Cameron L. McNeil, W. Jeffrey Hurst, Edward J. Kennelly
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The widespread significance of tobacco in Mesoamerica is documented in historical and ethnographic sources, yet recovery of the organic remains of this plant from archaeological contexts is rare. Here, the authors present evidence for the ritual use of tobacco at Cotzumalhuapa, Guatemala, during the Late Classic period (AD 650–950). Detection of nicotine in residue analysis of three cylindrical ceramic vases recovered from cache deposits near the El Baúl acropolis suggests that these vessels contained tobacco infusions or other liquid preparations. These results suggest an ancient ritual practice involving tobacco for which there was previously no physical evidence in Mesoamerica.
Effects of Secondary Iron Phases on Kaolinite 27Al MAS NMR Spectra
- Paul A. Schroeder, Robert J. Pruett, Vernon J. Hurst
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- Clays and Clay Minerals / Volume 46 / Issue 4 / August 1998
- Published online by Cambridge University Press:
- 28 February 2024, pp. 429-435
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Eight kaolinite and 2 halloysite samples were analyzed using 27Al magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy, chemical analysis and magnetic susceptibility to understand the effect of isomorphously substituted Fe3+ and secondary Fe phases on the NMR signal. Known additions of goethite and hematite were made to determine the response of kaolinite 27Al MAS NMR spectra and sample magnetic susceptibilities.
Results from high field (11.7 T) NMR studies show positive correlations between 1) Fe content, 2) magnetic susceptibility and 3) relative intensity of the spinning side band (SSB) to central band (CB) ratio. No correlation is observed between the mass-corrected NMR spectral intensity and Fe content. Comparative high/low field (11.7 T/8.46 T) NMR studies show a decrease in the relative ratio of line broadening with increasing Fe content. Projected trends of known additions of hematite and goethite versus magnetic susceptibility extrapolate back to zero y intercepts that have Fe concentrations higher than actually measured.
Absolute intensity observations have negative implications for the use of 27Al MAS NMR spectroscopy in assessing Fe-ordering in kaolinites. First, high-energy, short (1/6 of π/2 solutions) pulse sequences do not produce reliable quantitative data needed to assess paramagnetic line-broadening affects caused by different Fe-ordering clustering scenarios. The lack of perfect correlation between SSB/CB, Fe content and magnetic susceptibility indicates that differences exist with respect to 1) the amount of isomorphously substituted Fe, 2) the ordering of the Fe within kaolinite, 3) the concentration of secondary Fe phases and 4) magnetic susceptibility of the secondary Fe assemblage. Variability of line-width ratios at different field strengths indicates an increasing second-order quadrupole effect (SOQE) with increasing Fe. Finally, the difference between the observed Fe content and that predicted from magnetic susceptibility measurements suggest that magnetic domain properties of secondary Fe phases behave differently from Fe domains bound in kaolinite.
Origin and Classification of Coastal Plain Kaolins, Southeastern USA, and the Role of Groundwater and Microbial Action
- Vernon J. Hurst, Sam M. Pickering, Jr.
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- Clays and Clay Minerals / Volume 45 / Issue 2 / April 1997
- Published online by Cambridge University Press:
- 28 February 2024, pp. 274-285
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Along the inner Coastal Plain, kaolinite-metahalloysite-rich, neritic muds of Cretaceous-Eocene age have undergone intense postdepositional alteration in the recharge area of the regional groundwater system. Weathering processes have had the following profound effects on the original sediments: 1) strong compositional and textural modification of both clay and non-clay minerals; 2) whitening of the originally darker sediments by partial removal of organic matter, Fe and Mn; and 3) recrystallization of kaolinite and metahalloysite, most conspicuous where there are coarse stacks and vermiforms. Where the combination of initial sediment composition and alteration intensity was most favorable, these changes have produced important deposits of commercial quality, which now sustain the world's largest kaolin production district. The earliest change was partial sequestration of iron as sulfide and concurrent destruction of some organic matter, mediated by sulfate-reducing bacteria. Subsequent weathering resulted in gradual leaching of alkalies, alkaline earths, iron and silica, and attendant nucleation and growth of minerals compatible with the compositional changes. The existence of several closely spaced erosional unconformities, separated by neritic sediments, is proof that weathering conditions commonly changed at a given site, in response to changes in thickness or lithology of the overlying rocks. Dsyoxic → ← oxic reversals modified both the rate and kind of alteration. (“Dysoxic” refers to molecular oxygen concentration too low to be toxic to anaerobes or cause abiotic oxidation; less extreme than “anoxic”.) Kaolins were produced partly by slower dysoxic weathering in saturated groundwater zones but mainly by more rapid oxic weathering in unsaturated zones, where bauxites also locally formed. Gradual transformation of some sediments to kaolin rarely began and ended in the same epoch. At several places most of the kaolinization (see “Definitions”) took place during Recent time, tens of millions of years after deposition of the sediments. Since the kaolins resulted from postdepositional alteration rather than sedimentary processes, they are better referred to as “Coastal Plain” rather than “sedimentary” kaolins.
FC12: Ageism and mental health stigma: key barriers to accessing mental health services among Peruvian older adults
- Oscar Flores-Flores, Ivonne V. Carrión, Lorena Rey, Diego Otero-Oyague, Alejandro Zevallos-Morales, José Parodi, Trishul Siddharthan, Lesley Steinman, John Hurst, Joseph Gallo, Suzanne Pollard
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- International Psychogeriatrics / Volume 35 / Issue S1 / December 2023
- Published online by Cambridge University Press:
- 02 February 2024, p. 75
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Objective:
To explore barriers towards mental health services for older adults with symptoms of depression and/or anxiety in a low-resource community in Lima, Peru. We explored these barriers from the perspective of older adults and health providers.
Methods:We conducted an interview-based qualitative study. The first set of interviews was carried out between October 2018 and February 2019, and the second, between January 2022 and September 2022. In the first sample, we interviewed 38 older adults ≥60 years with symptoms of depression (Patient Health Questionnaire-9 ≥ 10), anxiety (Beck Anxiety Inventory ≥ 16), or those who had previous experience using formal mental health care irrespective of current symptoms. In the second sample, we included 20 health providers (8 psychologists, 2 general practitioners, 2 nurses, 4 psychiatrists, 4 social workers). We used an inductive thematic data analysis.
Results:We identified two main barriers: stigma towards mental health conditions and care, and ageism. Stigma and ageism interacted with each other and exacerbated other barriers to mental health services. Stigma led to negative labels for people with mental health conditions and shame among older adults to disclose their feelings to health providers. Looking at the health system, health care facilities were described as not being age friendly. Additionally, aside from psychologists and psychiatrists, most providers mentioned little previous training in mental health care, but even less about the nuances of treating mental health challenges in old age. Among older adults, other important barriers were the accumulated mistrust towards health professionals and lack of knowledge about existing services and how they work. Importantly, older adults mentioned competing priorities, for example, not having time to seek care because they needed to work to obtain food. Other barriers included hidden costs incurred for transportation to health centers or to obtain medications. For older adults with diminished physical mobility, lack of accompaniment to attend health appointments was another important barrier.
Conclusions:Community-based mental health interventions towards older adults need to address ageism and mental health stigma to improve access to care. Furthermore, training for health providers must be improved and expanded to prioritize older adult mental health care.
Rethinking Transnational Activism through Regional Perspectives: Reflections, Literatures and Cases
- Thomas Davies, Daniel Laqua, Maria Framke, Anne-Isabelle Richard, Patricia Oliart, Kate Skinner, Pilar Requejo de Lamo, Robert Kramm, Charlotte Alston, Matthew Hurst
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- Transactions of the Royal Historical Society , First View
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- 08 January 2024, pp. 1-27
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This collectively authored article argues for a regional turn in the historical study of transnational activism. By considering not only pan-regional movements but also examples of borderland contexts, transregional connections and diasporic understandings of ‘region’, our discussion identifies fresh possibilities for investigating the evolution and functioning of transnational activism. Based on a Royal Historical Society-funded workshop held at and supported by Northumbria University, the article brings together insights from diverse locations and arenas of contestation. The first part considers literatures on three macro-regional settings – South Asia, Western Europe and Latin America – to illustrate the importance of distinctive regional contexts and constructs in shaping transnational activism and its goals. The second part turns to case studies of transnational activism in and beyond Eastern Europe, West Africa, the Caribbean and East Asia. In doing so, it explores very different notions of the regional to identify how transnational activism has both shaped and been shaped by these ideas. Taken together, the two parts highlight the role of regional identities and projects in challenging inequalities and external domination. Our analysis and examples indicate the possibilities of a regionally rooted approach for writing histories of transnational activism.