Fat-free milk and dairy products
(Stacey Newman/iStockphoto)
A 2005 Archives of Internal Medicine study found that men who consumed more dairy products, particularly those low in fat, had a reduced risk of type 2 diabetes. Other research suggests that dairy products may help ward off insulin resistance, which leads to type 2 diabetes. When shopping, select dairy products that are fortified with vitamin D and calcium, Mayer-Davis suggests, since research shows that low levels of vitamin D may be tied to poor health outcomes.

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