Mixed
The association between fish/seafood consumption and diabetes risk is modified by geography and BMI: it may lower risk in Asian populations with lower BMI, but increase risk in North American/European populations with higher BMI.
If you are in Asia or have a lower BMI, eating fish might slightly lower your diabetes risk. If you are in North America or Europe and have a higher BMI, high fish consumption was associated with a higher risk in this study, though causality is not proven. Do not change your fish intake based solely on this, but be aware that context matters.
Lower risk was seen in studies with lower mean BMI (<24·5 kg/m2), and in studies from Asia... and higher risk in studies from North America/Europe, with higher mean BMI (≥ 24·5 kg/m2)... For example, fish/seafood was associated with lower DM risk in Asia cohorts (RR per 100 g/d = 0·89, 95 % CI = 0·81, 0·98), and higher risk in North America/Europe cohorts (RR per 100 g/d = 1·38, 95 % CI = 1·13, 1·70)
Why this rating
Based on meta-regression of observational studies; high collinearity between BMI, location, and follow-up duration limits causal inference.
Source
Omega-3 fatty acids and incident type 2 diabetes: a systematic review and meta-analysis
Jason Wu et al. · British Journal Of Nutrition · 2012
DOI 10.1017/s0007114512001602
More from this paper
- Consumption of fish and seafood is not significantly associated with the incidence of type 2 diabetes in the general population, though risk varies by geographic location and BMI.Good
- Dietary and circulating levels of Alpha-Linolenic Acid (ALA) show a non-significant trend toward lower diabetes risk, whereas EPA and DHA (from fish or supplements) show no significant association with diabetes incidence.Good
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