1Johnson, EJ (2002) The role of carotenoids in human health. Nutr Clin Care 5, 56–65.
2Bendich, A (2004) From 1989 to 2001: what have we learned about the ‘biological actions of beta-carotene’? J Nutr 134, 225S–230S.
3Nagao, A (2004) Oxidative conversion of carotenoids to retinoids and other products. J Nutr 134, 237S–240S.
4Stahl, W & Sies, H (2005) Bioactivity and protective effects of natural carotenoids. Biochim Biophys Acta 1740, 101–107.
5Parker, RS (1996) Absorption, metabolism, and transport of carotenoids. FASEB J 10, 542–551.
6Holden, JM, Eldridge, AL, Beecher, GR, et al. (1999) Carotenoid content of U.S. foods: an update of the database. J Food Comp Anal 12, 169–196.
7Hoffmann, I & Leitzmann, C (2000) Raw food diet: health benefits and risks. In Vegetables, Fruits, and Herbs in Health Promotion, pp. 293–308 [Watson, RR, editor]. Boca Raton, FL: CRC Press.
8Koebnick, C, Strassner, C, Hoffmann, I & Leitzmann, C (1999) Consequences of a long-term raw food diet on body weight and menstruation: results of a questionnaire survey. Ann Nutr Metab 43, 69–79.
9Koebnick, C, Garcia, AL, Dagnelie, PC, et al. (2005) Long-term consumption of a raw food diet is associated with favorable serum LDL cholesterol and triglycerides but also with elevated plasma homocysteine and low serum HDL cholesterol in humans. J Nutr 135, 2372–2378.
10Cunningham, E (2004) What is a raw foods diet and are there any risks or benefits associated with it? J Am Diet Assoc 104, 1623.
11Haddad, EH, Berk, LS, Kettering, JD, Hubbard, RW & Peters, WR (1999) Dietary intake and biochemical, hematologic, and immune status of vegans compared with nonvegetarians. Am J Clin Nutr 70, Suppl. 3, 586S–593S.
12Bederova, A, Kudlackova, M, Simoncic, R, et al. (2000) Comparison of nutrient intake and corresponding biochemical parameters in adolescent vegetarians and non-vegetarians. Cas Lek Cesk 139, 396–400.
13van Het Hof, KH, West, CE, Weststrate, JA & Hautvast, JG (2000) Dietary factors that affect the bioavailability of carotenoids. J Nutr 130, 503–506.
14Zaripheh, S & Erdman, JW Jr (2002) Factors that influence the bioavailability of xanthophylls. J Nutr 132, 531S–534S.
15Federal Institute for Health Protection of Consumers and Veterinary Medicine (1999) The German Food Code and Nutrient Data Base (BLS II.3): Conception, Structure and Documentation of the Data Base blsdat. Berlin, Germany: Federal Institute for Health Protection of Consumers and Veterinary Medicine.
16Institute of Medicine (2001) Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium and Zinc. Washington, DC: Institute of Medicine.
17Vuilleumier, JP, Keller, HE, Gysel, D & Hunziker, F (1983) Clinical chemical methods for the routine assessment of the vitamin status in human populations. Part I: The fat-soluble vitamins A and E, and beta-carotene. Int J Vitam Nutr Res 53, 265–272.
18Jakob, E & Elmadfa, I (1995) Rapid HPLC assay for the assessment of vitamin K1, A, E and beta-carotene status in children (7–19 years). Int J Vitam Nutr Res 65, 31–35.
19Jakob, E & Elmadfa, I (1995) Application of a simplified HPLC assay for the determination of phylloquinone (vitamin K1) in animal and plant food items. Food Chem 56, 87.
20Gibson, R (1990) Principles of Nutritional Assessment. New York: Oxford University Press.
21Pilch, SM (1987) Analysis of vitamin A data from the health and nutrition examination surveys J Nutr 117, 634–640.
22Diplock, AT (1991) Antioxidant nutrients and disease prevention: an overview. Am J Clin Nutr 53, Suppl. 1, 189S–193S.
23Biesalski, H, Bohles, H, Esterbauer, H, Furst, P, Gey, P, Hundsdorfer, G, Kasper, H, Sies, H & Weisburger, J (1997) Antioxidant vitamins in prevention. Clin Nutr 16, 151–155.
24Gey, KF (1993) Prospects for the prevention of free radical disease, regarding cancer and cardiovascular disease. Br Med Bull 49, 679–699.
25West, S, Vitale, S, Hallfrisch, J, et al. (1994) Are antioxidants or supplements protective for age-related macular degeneration? Arch Ophthalmol 112, 222–227.
26Ganji, V & Kafai, MR (2005) Population determinants of serum lycopene concentrations in the United States: data from the Third National Health and Nutrition Examination Survey, 1988–1994. J Nutr 135, 567–572.
27Mensink, GB & Beitz, R (2004) Food and nutrient intake in East and West Germany, 8 years after the reunification – The German Nutrition Survey 1998. Eur J Clin Nutr 58, 1000–1010.
28German Nutrition Society, Austrian Nutrition Society, Swiss Society for Nutrition Research & Swiss Nutrition Association (editors) (2002) Reference Values for Nutrient Intake, .
29Palace, VP, Khaper, N, Qin, Q & Singal, PK (1999) Antioxidant potentials of vitamin A and carotenoids and their relevance to heart disease. Free Radic Biol Med 26, 746–761.
30Astorg, P (1997) Food carotenoids and cancer prevention: an overview of current research. Trends Food Sci Technol 8, 406–413.
31Tavani, A & La Vecchia, C (1999) Beta-carotene and risk of coronary heart disease. A review of observational and intervention studies. Biomed Pharmacother 53, 409–416.
32Rauma, AL & Mykkanen, H (2000) Antioxidant status in vegetarians versus omnivores. Nutrition 16, 111–119.
33Rider, AA, Calkins, BM, Arthur, RS & Nair, PP (1984) Diet, nutrition intake, and metabolism in populations at high and low risk for colon cancer. Concordance of nutrient information obtained by different methods. Am J Clin Nutr 40, Suppl. 4, 906–913.
34Yeum, KJ, Booth, SL, Sadowski, JA, et al. (1996) Human plasma carotenoid response to the ingestion of controlled diets high in fruits and vegetables. Am J Clin Nutr 64, 594–602.
35Tyssandier, V, Reboul, E, Dumas, JF, et al. (2003) Processing of vegetable-borne carotenoids in the human stomach and duodenum. Am J Physiol Gastrointest Liver Physiol 284, G913–G923.
36Brown, MJ, Ferruzzi, MG, Nguyen, ML, et al. (2004) Carotenoid bioavailability is higher from salads ingested with full-fat than with fat-reduced salad dressings as measured with electrochemical detection. Am J Clin Nutr 80, 396–403.
37Unlu, NZ, Bohn, T, Clinton, SK & Schwartz, SJ (2005) Carotenoid absorption from salad and salsa by humans is enhanced by the addition of avocado or avocado oil. J Nutr 135, 431–436.
38Bazzano, LA, He, J, Ogden, LG, et al. (2002) Fruit and vegetable intake and risk of cardiovascular disease in US adults: the first National Health and Nutrition Examination Survey Epidemiologic Follow-up Study. Am J Clin Nutr 76, 93–99.
39World Health Organization (1990) Diet, Nutrition and the Prevention of Chronic Diseases. Geneva: WHO.
40Kennedy, E & Davis, CA (2000) Dietary guidelines 2000 – the opportunity and challenges for reaching the consumer. J Am Diet Assoc 100, 1462–1465.
41Krauss, RM, Eckel, RH, Howard, B, et al. (2000) AHA Dietary Guidelines: revision 2000: A statement for healthcare professionals from the Nutrition Committee of the American Heart Association. Circulation 102, 2284–2299.
42Rock, CL, Lovalvo, JL, Emenhiser, C, Ruffin, MT, Flatt, SW & Schwartz, SJ (1998) Bioavailability of beta-carotene is lower in raw than in processed carrots and spinach in women. J Nutr 128, 913–916.
43Castenmiller, JJ, West, CE, Linssen, JP, van het Hof, KH & Voragen, AG (1999) The food matrix of spinach is a limiting factor in determining the bioavailability of beta-carotene and to a lesser extent of lutein in humans. J Nutr 129, 349–355.
44Erdman, JW Jr & Poneros-Schneier, AG (1988) Nutrient interactions involving vitamins and minerals. Bol Asoc Med P R 80, 291–293.
45Muller, H, Bub, A, Watzl, B & Rechkemmer, G (1999) Plasma concentrations of carotenoids in healthy volunteers after intervention with carotenoid-rich foods. Eur J Nutr 38, 35–44.
46Nebeling, LC, Forman, MR, Graubard, BI & Snyder, RA (1997) Changes in carotenoid intake in the United States: the 1987 and 1992 National Health Interview Surveys. J Am Diet Assoc 97, 991–996.
47Pelz, R, Schmidt-Faber, B & Heseker, H (1998) Carotenoid intake in the German National Food Consumption Survey. Z Ernahrungswiss 37, 319–327.
48Porrini, M, Riso, P & Testolin, G (1998) Absorption of lycopene from single or daily portions of raw and processed tomato. Br J Nutr 80, 353–361.
49Bohm, V & Bitsch, R (1999) Intestinal absorption of lycopene from different matrices and interactions to other carotenoids, the lipid status, and the antioxidant capacity of human plasma. Eur J Nutr 38, 118–125.
50Schneider, R, Eberhardt, W, Heseker, H & Kubler, W (1995) Vitamin intake and vitamin status in Germany. Bibl Nutr Dieta 52, 116–127.
51Wang, Z, Yin, S, Zhao, X, Russell, RM & Tang, G (2004) Beta-carotene–vitamin A equivalence in Chinese adults assessed by an isotope dilution technique. Br J Nutr 91, 121–131.
52Riedl, J, Linseisen, J, Hoffmann, J & Wolfram, G (1999) Some dietary fibers reduce the absorption of carotenoids in women. J Nutr 129, 2170–2176.
53Olmedilla, B, Granado, F, Blanco, I & Rojas-Hidalgo, E (1994) Seasonal and sex-related variations in six serum carotenoids, retinol, and alpha-tocopherol. Am J Clin Nutr 60, 106–110.
54Armstrong, NC, Paganga, G, Brunner, E, et al. (1997) Reference values for alpha-tocopherol and beta-carotene in the Whitehall II Study. Free Radic Res 27, 207–219.
55Vogel, S, Contois, JH, Tucker, KL, Wilson, PW, Schaefer, EJ & Lammi-Keefe, CJ (1997) Plasma retinol and plasma and lipoprotein tocopherol and carotenoid concentrations in healthy elderly participants of the Framingham Heart Study. Am J Clin Nutr 66, 950–958.
56Brady, WE, Mares-Perlman, JA, Bowen, P & Stacewicz-Sapuntzakis, M (1996) Human serum carotenoid concentrations are related to physiologic and lifestyle factors. J Nutr 126, 129–137.
57Dutra-de-Oliveira, JE, Favaro, RM, Leonardo, IR, Jordao Junior, AA & Vannucchi, H (1998) Absorption, by humans, of beta-carotene from fortified soybean oil added to rice: effect of heat treatment. J Am Coll Nutr 17, 361–365.
58Tyssandier, V, Cardinault, N, Caris-Veyrat, C, et al. (2002) Vegetable-borne lutein, lycopene, and beta-carotene compete for incorporation into chylomicrons, with no adverse effect on the medium-term (3-wk) plasma status of carotenoids in humans. Am J Clin Nutr 75, 526–534.