Posted by admin in Prescription Diabetes Drugs on October 07th, 2010

Consuming white or oily fish at least once per week may reduce the risk for Type 2 diabetes, whereas high consumption of shellfish may increase this risk, report researchers in the journal Diabetes Care.

Nita Forouhi and colleagues (University of Cambridge, UK) completed a prospective analysis of the European Prospective Investigation of Cancer-Norfolk (EPIC-Norfolk) study to assess whether consumption of different types of fish and seafood is associated with future risk for developing Type 2 diabetes.

In total, 21,984 participants aged 40-79 years at baseline completed a food frequency questionnaire, which asked about fish and seafood intake (white fish, oily fish, fried fish, and shellfish) and categorized consumption as at least one serving per week versus less than one serving per week.

The participants were followed for an average of 10 years for the development of any health conditions, during which time 725 individuals developed Type 2 diabetes.

Having a higher total fish intake was associated with a 25% lower risk for developing Type 2 diabetes after adjusting for known risk factors and potential confounders including age, gender, family history of diabetes, education, smoking, physical activity, other dietary factors, and obesity.

Researchers reported a similar inverse association with diabetes risk and white fish and oily fish intakes; however, the associations were not significant after adjustment for obesity or dietary factors. Fried fish was not significantly associated with diabetes risk.

Interestingly, the researchers found that eating shellfish at least once per week was associated with a 36% increased risk for Type 2 diabetes, which they suggest may be related to cooking methods and condiments as shellfish tend to be fried and accompanied by mayonnaise or garlic butter.

“Our novel findings are potentially important as they suggest that the type of fish consumed may differentially influence the risk of diabetes,” write the authors.

“Total intake of both white and oily fish was associated with a lower risk for diabetes, reinforcing the public health message to consume fish regularly,” they conclude.

MedWire (www.medwire-news.md) is an independent clinical news service provided by Current Medicine Group, a trading division of Springer Healthcare Limited. © Springer Healthcare Ltd; 2009

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