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Blood n-3 fatty acid levels and total and cause-specific mortality from 17 prospective studies.


ABSTRACT: The health effects of omega-3 fatty acids have been controversial. Here we report the results of a de novo pooled analysis conducted with data from 17 prospective cohort studies examining the associations between blood omega-3 fatty acid levels and risk for all-cause mortality. Over a median of 16 years of follow-up, 15,720 deaths occurred among 42,466 individuals. We found that, after multivariable adjustment for relevant risk factors, risk for death from all causes was significantly lower (by 15-18%, at least p < 0.003) in the highest vs the lowest quintile for circulating long chain (20-22 carbon) omega-3 fatty acids (eicosapentaenoic, docosapentaenoic, and docosahexaenoic acids). Similar relationships were seen for death from cardiovascular disease, cancer and other causes. No associations were seen with the 18-carbon omega-3, alpha-linolenic acid. These findings suggest that higher circulating levels of marine n-3 PUFA are associated with a lower risk of premature death.

SUBMITTER: Harris WS 

PROVIDER: S-EPMC8062567 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Blood n-3 fatty acid levels and total and cause-specific mortality from 17 prospective studies.

Harris William S WS   Tintle Nathan L NL   Imamura Fumiaki F   Qian Frank F   Korat Andres V Ardisson AVA   Marklund Matti M   Djoussé Luc L   Bassett Julie K JK   Carmichael Pierre-Hugues PH   Chen Yun-Yu YY   Hirakawa Yoichiro Y   Küpers Leanne K LK   Laguzzi Federica F   Lankinen Maria M   Murphy Rachel A RA   Samieri Cécilia C   Senn Mackenzie K MK   Shi Peilin P   Virtanen Jyrki K JK   Brouwer Ingeborg A IA   Chien Kuo-Liong KL   Eiriksdottir Gudny G   Forouhi Nita G NG   Geleijnse Johanna M JM   Giles Graham G GG   Gudnason Vilmundur V   Helmer Catherine C   Hodge Allison A   Jackson Rebecca R   Khaw Kay-Tee KT   Laakso Markku M   Lai Heidi H   Laurin Danielle D   Leander Karin K   Lindsay Joan J   Micha Renata R   Mursu Jaako J   Ninomiya Toshiharu T   Post Wendy W   Psaty Bruce M BM   Risérus Ulf U   Robinson Jennifer G JG   Shadyab Aladdin H AH   Snetselaar Linda L   Sala-Vila Aleix A   Sun Yangbo Y   Steffen Lyn M LM   Tsai Michael Y MY   Wareham Nicholas J NJ   Wood Alexis C AC   Wu Jason H Y JHY   Hu Frank F   Sun Qi Q   Siscovick David S DS   Lemaitre Rozenn N RN   Mozaffarian Dariush D  

Nature communications 20210422 1


The health effects of omega-3 fatty acids have been controversial. Here we report the results of a de novo pooled analysis conducted with data from 17 prospective cohort studies examining the associations between blood omega-3 fatty acid levels and risk for all-cause mortality. Over a median of 16 years of follow-up, 15,720 deaths occurred among 42,466 individuals. We found that, after multivariable adjustment for relevant risk factors, risk for death from all causes was significantly lower (by  ...[more]

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