A new Harvard study in the American Journal of Clinical Nutrition links fish and omega-3 oil consumption to type 2 diabetes. Following 195,204 adults for 14 to18 years, researchers found that the more fish or omega-3 fatty acids participants consumed, the higher their risk of developing diabetes. The risk increase was modest for occasional fish eaters, but rose to a 22 percent increased risk for women consuming five or more fish servings per week.
Prior studies have suggested that fat accumulation within muscle cells can lead to insulin resistance which, in turn, contributes to diabetes. People who eat no animal products have less fat in their cells and much less risk of developing diabetes. A low-fat vegan diet has been shown to improve type 2 diabetes.
- Kaushik M, Mozaffarian D, Spiegelman D, Manson JE, Willett WC, Hu FB. Long-chain omega-3 fatty acids, fish intake, and the risk of type 2 diabetes mellitus. Am J Clin Nutr. 2009 Jul 22. [Epub ahead of print]
- Goff LM, Bell JD, So PW, Dornhorst A, Frost GS. Veganism and its relationship with insulin resistance and intramyocellular lipid. Eur J Clin Nutr. 2005;59:291-298.
- Barnard ND, Cohen J, Jenkins DJ, Turner-McGrievy G, Gloede L, Green A, Ferdowsian H. A low-fat vegan diet and a conventional diabetes diet in the treatment of type 2 diabetes: a randomized, controlled, 74-week clinical trial. Am J Clin Nutr. 2009;89:1588S-1596S.