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Long-chain n-3 polyunsaturated fatty acids in plasma in British meat-eating, vegetarian, and vegan men.
Am J Clin Nutr. 2005 Aug; 82(2):327-34.AJ

Abstract

BACKGROUND

Plasma concentrations of long-chain n-3 polyunsaturated fatty acids are lower in vegetarians and in vegans than in omnivores. No data are available on whether these concentrations differ between long- and short-term vegetarians and vegans.

OBJECTIVES

We compared plasma fatty acid composition in meat-eaters, vegetarians, and vegans and examined whether the proportions of eicosapentaenoic acid (20:5n-3; EPA), docosapentaenoic acid (22:5n-3; DPA), and docosahexaenoic acid (22:6n-3; DHA) were related to the subjects' duration of adherence to their diets or to the proportions of plasma linoleic acid (18:2n-6; LA) and alpha-linolenic acid (18:3n-3; ALA).

DESIGN

The present cross-sectional study included 196 meat-eating, 231 vegetarian, and 232 vegan men in the United Kingdom. Information on anthropometry, diet, and smoking habits was obtained through a questionnaire. Total fatty acid composition in plasma was measured.

RESULTS

The proportions of plasma EPA and DHA were lower in the vegetarians and in the vegans than in the meat-eaters, whereas only small differences were seen for DPA. Plasma EPA, DPA, and DHA proportions were not significantly associated with the duration of time since the subjects became vegetarian or vegan, which ranged from <1 y to >20 y. In the vegetarians and the vegans, plasma DHA was inversely correlated with plasma LA.

CONCLUSIONS

The proportions of plasma long-chain n-3 fatty acids were not significantly affected by the duration of adherence to a vegetarian or vegan diet. This finding suggests that when animal foods are wholly excluded from the diet, the endogenous production of EPA and DHA results in low but stable plasma concentrations of these fatty acids.

Authors+Show Affiliations

Cancer Research UK Epidemiology Unit, University of Oxford, Oxford, United Kingdom. magdalena.rosell@cancer.org.ukNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16087975

Citation

Rosell, Magdalena S., et al. "Long-chain N-3 Polyunsaturated Fatty Acids in Plasma in British Meat-eating, Vegetarian, and Vegan Men." The American Journal of Clinical Nutrition, vol. 82, no. 2, 2005, pp. 327-34.
Rosell MS, Lloyd-Wright Z, Appleby PN, et al. Long-chain n-3 polyunsaturated fatty acids in plasma in British meat-eating, vegetarian, and vegan men. Am J Clin Nutr. 2005;82(2):327-34.
Rosell, M. S., Lloyd-Wright, Z., Appleby, P. N., Sanders, T. A., Allen, N. E., & Key, T. J. (2005). Long-chain n-3 polyunsaturated fatty acids in plasma in British meat-eating, vegetarian, and vegan men. The American Journal of Clinical Nutrition, 82(2), 327-34.
Rosell MS, et al. Long-chain N-3 Polyunsaturated Fatty Acids in Plasma in British Meat-eating, Vegetarian, and Vegan Men. Am J Clin Nutr. 2005;82(2):327-34. PubMed PMID: 16087975.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Long-chain n-3 polyunsaturated fatty acids in plasma in British meat-eating, vegetarian, and vegan men. AU - Rosell,Magdalena S, AU - Lloyd-Wright,Zouë, AU - Appleby,Paul N, AU - Sanders,Thomas A B, AU - Allen,Naomi E, AU - Key,Timothy J, PY - 2005/8/10/pubmed PY - 2005/9/2/medline PY - 2005/8/10/entrez SP - 327 EP - 34 JF - The American journal of clinical nutrition JO - Am. J. Clin. Nutr. VL - 82 IS - 2 N2 - BACKGROUND: Plasma concentrations of long-chain n-3 polyunsaturated fatty acids are lower in vegetarians and in vegans than in omnivores. No data are available on whether these concentrations differ between long- and short-term vegetarians and vegans. OBJECTIVES: We compared plasma fatty acid composition in meat-eaters, vegetarians, and vegans and examined whether the proportions of eicosapentaenoic acid (20:5n-3; EPA), docosapentaenoic acid (22:5n-3; DPA), and docosahexaenoic acid (22:6n-3; DHA) were related to the subjects' duration of adherence to their diets or to the proportions of plasma linoleic acid (18:2n-6; LA) and alpha-linolenic acid (18:3n-3; ALA). DESIGN: The present cross-sectional study included 196 meat-eating, 231 vegetarian, and 232 vegan men in the United Kingdom. Information on anthropometry, diet, and smoking habits was obtained through a questionnaire. Total fatty acid composition in plasma was measured. RESULTS: The proportions of plasma EPA and DHA were lower in the vegetarians and in the vegans than in the meat-eaters, whereas only small differences were seen for DPA. Plasma EPA, DPA, and DHA proportions were not significantly associated with the duration of time since the subjects became vegetarian or vegan, which ranged from <1 y to >20 y. In the vegetarians and the vegans, plasma DHA was inversely correlated with plasma LA. CONCLUSIONS: The proportions of plasma long-chain n-3 fatty acids were not significantly affected by the duration of adherence to a vegetarian or vegan diet. This finding suggests that when animal foods are wholly excluded from the diet, the endogenous production of EPA and DHA results in low but stable plasma concentrations of these fatty acids. SN - 0002-9165 UR - https://www.unboundmedicine.com/medline/citation/16087975/Long_chain_n_3_polyunsaturated_fatty_acids_in_plasma_in_British_meat_eating_vegetarian_and_vegan_men_ L2 - https://academic.oup.com/ajcn/article-lookup/doi/10.1093/ajcn.82.2.327 DB - PRIME DP - Unbound Medicine ER -