12 January - 20 June 2016

Lean fish consumption may help prevent diabetes

26 Feb 14

Norwegian scientists have investigated the relationship between consumption of lean fish and the risk of Type 2 Diabetes Mellitus (T2DM). Rates of T2DM are rapidly increasing worldwide, with risk factors for the disease known to include obesity; for this reason there has been a close focus on the effects of diet on the risk of developing the condition.

In a study published in PLOS One, researchers - from The Arctic University of Norway and the High North Research Centre for Climate and the Environment - found that lean fish consumption of 75-100 g/d was correlated with a decreased rate of developing T2DM. The study looked at 33740 Norwegian women who were recruited to the study between 1996 and 1998 and who had not been diagnosed with T2DM. The women filled in questionnaires about their total fish consumption, and consumption of fatty fish, lean fish and processed fish products specifically, as well as their use of cod liver oil tablets. These questionnaires were completed at the start of the study, and in follow-up between 2002 and 2005. At follow-up the subjects were also asked to report on whether they had developed T2DM; 479 women had been diagnosed with T2DM by this time.

After analysis, the researchers concluded that 75-100 g/d lean fish intake reduced the risk of T2DM by 30% - with no effect from total fish consumption, or that of the other identified types of fish product. However, they cautioned that they had not determined whether this beneficial effect was due directly to the lean fish, or to other lifestyle factors more common in the lean fish consumers.

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