In recent decades, the potency of cannabis resin increased globally, raising concerns, as higher potency has been associated with increased risk of psychiatric harms at the individual level. The aim here was to examine whether changes over time in the potency of seized cannabis resin samples were associated with psychiatric harms at the population level.

Data on ∆-9-tetrahydrocannabinol (THC) concentration in seized cannabis resin were obtained from forensic departments in Denmark (2000–2022), the country reporting the highest potency in Europe. Data on admissions to cannabis treatment, incidence of cannabis-induced psychosis, and dual diagnosis (schizophrenia and cannabis use disorder) were obtained from national registers. Time-dependent associations between potency and the outcomes were examined with mixed-effects linear regression models and associations across age and sex were explored. Candidate time lags were 0–10 years.

THC concentration increased almost fourfold: mean 8.3–31.2% from 2000 to 2022. In fully adjusted models, THC was positively associated with first-time cannabis treatment entry at lags of 0–6, strongest at year 0 (p < 0.0001); incidence of cannabis-induced psychosis at lags of 0–4, strongest at year 0 (p < 0.0001); and incidence of dual diagnosis at lags of 0–1, strongest at year 0 (p < 0.01). No positive associations were found in unadjusted models. Subgroup analyses indicated associations in older patients and women.

Potency of seized cannabis resin increased almost fourfold from 2000 to 2022. Changes in cannabis potency were positively associated with psychiatric harms at the population level across all outcomes.

To examine and synthesize data on the environmental impact of diet in Latin America.

A systematic review was conducted in April 2024, using Medline, Embase, Web of Science and Scopus databases, and updated in March 2025. We synthesized the evidence on the most reported environmental impact indicators. Meta-analysis was conducted to derive pooled estimates for individual countries of the mean dietary carbon and water footprints per person/per day; crude and energy-standardised (to 8,368 kJ (2,000 kcal)) values and stratified by dietary assessment method (DAM) and sociodemographic variables.

Latin America

Latin American populations

Of the 4,266 studies screened, 31 were included. Data on environmental impact of diet were reported for eight Latin American countries, with most coming from Brazil. Dietary water footprint ranged from 2,078 in Chile to 3,215 L/person/day/8,368 kJ in Brazil. Dietary carbon footprint ranged from 2.1 to 7.3 kgCO2-equivalents/person/day/8,368 kJ, in Peru and Argentina, respectively. The pooled standardised carbon footprint mean was 4.1 (95% CI 2.6–5.5, I2=100%) kgCO2-equivalents/person/day/8,368 kJ with no significant differences between DAM (p=0.86). A higher carbon footprint was observed in individuals with higher education level and urban residence (p<0.05).

The available evidence suggested a wide variation in dietary environmental impact between Latin American countries, but a paucity of studies conducted in countries other than Brazil. Standardised approach to estimate the environmental impact of diet across the region, and analytical perspectives in further research would support the development of country-relevant evidence-based public policies for sustainable diets in Latin America.

Identify dietary patterns among U.S. older adults and examine their associations with sociodemographic and health characteristics including economic and physical-functioning-related food insecurity.

Secondary analysis of dietary intake data from the 2013–2018 What We Eat in America component of NHANES. Dietary patterns were derived using cluster analysis and compared by diet quality (HEI-2020), demographic characteristics, health indicators, and multidimensional food insecurity.

United States.

A nationally representative sample of 5,062 adults aged ≥60 years

Five dietary patterns were identified. The largest pattern, “Juices, smoothies, grain drinks, and soups” (53.0%), was characterized by the lowest mean energy and protein intake and a moderate HEI-2020 score (66.0 ± 0.8). In contrast, the “Cooked cereals and yogurt” pattern (10.8%) had the highest HEI-2020 score (72.3 ± 1.4) and more favorable health indicators. Patterns high in processed meats and baked goods—“Cured meats, sandwiches, and sweet bakery products” (18.1%) and “Meats, alcohol, and quick breads” (11.0%)—had the lowest diet quality scores (48.5 ± 1.0 and 58.3 ± 1.6, respectively) and were more common among younger older adults, males, current smokers, and individuals with obesity. Food insecurity due to both economic constraints and physical functioning limitations was most prevalent in the lower-quality soft-food pattern and least prevalent in the “Seafood and vegetables” pattern (0.5%).

Distinct dietary patterns exist among U.S. older adults, with substantial variation in diet quality, health characteristics, and food insecurity. Interventions should address both economic and functional barriers to support nutrient-dense, texture-appropriate diets in older adults.