Association between omega-6 and omega-3 fatty acids intake, body mass index and depression in young Iranian adults: a cross sectional study
The ratio of dietary omega-6 to omega-3 fatty acids shows an unexpectedly strong link to depression risk, warranting follow-up studies to test whether diet changes help.
Cross-sectional study of 440 young Iranian adults shows a robust inverse association between omega-3 intake and depression and a very strong positive association between elevated omega-6/omega-3 ratio and depression, independent of BMI. While cross-sectional design limits causal inference, the extremely large effect size for the omega-6/3 ratio warrants prospective replication.
What the study was
- Study design
- Cross-sectional
- Population
- University students aged 18-30, Iran
- Sample size
- 440
- Category
- Prevention
- Maturity
- Exploratory
- Journal
- Journal of Health, Population, and Nutrition
Why it surfaced
Notable omega-6/3 ratio effect size; peripheral to core cardiometabolic watchlist; cross-sectional design and small n limit score.
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