Research
Adherence
Common genetic variants explain only a small fraction (12-24%) of the variation in fish and EPA+DHA consumption, with non-genetic personal and environmental factors being the principal determinants of intake levels.
Do not rely on genetics to predict or change your fish intake. The study shows that where you live, your culture, and your habits matter far more than your DNA. Focus on modifying your environment (e.g., access, availability) rather than looking for a genetic reason why you can't or won't eat fish.
GoodQualifiesHIGH confidence
These novel findings suggest that non-genetic personal and environmental factors are principal determinants of the remarkable variation in fish consumption, representing modifiable targets for increasing intakes among all individuals.
Why this rating
Large sample size (n=86,467) and rigorous GWAS meta-analysis methodology, though effect sizes are small.
Source
Genome-wide association meta-analysis of fish and EPA+DHA consumption in 17 US and European cohorts
Dariush Mozaffarian et al. · PLoS ONE · 2017
Meta-analysis · 17 studiesCited 22×
Read the paper This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →