Diabetes Care: Association between oily and non-oily fish intake and fish oil supplements and type 2 diabetes

In a recent study published in Diabetes Care, an authoritative journal in the field of diabetes, researchers aimed at assessing oily and non-oily fish intake and the association between fish oil supplements and type 2 diabetes (T2D).
researchers included 392,287 middle-aged and older participants (55.0 per cent of women) without diabetes, major cardiovascular disease and cancer in the UK biolibrary, and obtained information on the main foods that participants habitually consumed at baseline and the use of fish oil supplements (2006-2010).
of these participants, 163,706 participated in one of five rounds of the 24-hour dietary recall questionnaire between 2009 and 2012.
7,262 T2D incidents occurred during an average of 10.1 years of follow-up.
compared to participants who reported never ingesting oily fish, participants who ate oily fish less than once a week, once a week and more than twice a week had a multivariate adjustment risk ratio of 0.84 (95% CI of 0.78-78- 0.91), 0.78 (0.72-0.85) and 0.78 (0.71-0.86) (Trend P.lt;0.001).
consumption of non-oily fish was not associated with T2D risk (trend P s 0.45).
participants who regularly ingested fish oil at baseline had a 9 percent lower risk of developing T2D (95 percent CI was 4-14 percent) than non-ingesters.
, participants who regularly ingested fish oil at baseline had an 18 percent (8-27 percent) lower risk of T2D than participants who did not regularly consume fish oil.
, it is clear that edible oily fish instead of non-oily fish has a lower T2D risk.
use of fish oil supplements, especially over time, is also associated with reduced risk of T2D.