Mixed
Higher circulating levels of long-chain omega-3 fatty acids, particularly EPA, are associated with a significantly lower incidence of congestive heart failure in older adults.
For older adults, maintaining higher levels of long-chain omega-3s (specifically EPA and DHA) is linked to a roughly 50% lower risk of developing congestive heart failure. This is best achieved through dietary sources like oily fish, as indicated by blood biomarker levels, rather than relying solely on self-reported diet. While this is observational data, it supports current guidelines to consume fish, especially oily fish, at least twice a week.
Circulating individual and total n-3 fatty acids are associated with lower incidence of CHF in older adults.
Why this rating
Prospective cohort study with large sample size and objective biomarkers, but observational design limits causal inference compared to RCTs.
Source
Circulating Long-Chain ω-3 Fatty Acids and Incidence of Congestive Heart Failure in Older Adults: The Cardiovascular Health Study
Dariush Mozaffarian et al. · Annals of Internal Medicine · 2011
DOI 10.7326/0003-4819-155-3-201108020-00006
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