2. Vitamin D
Researchers at Britain's Warwick Medical School reviewed 28 studies involving 99,795 people and found that those participants with the highest levels of vitamin D lowered their risk of developing Type 2 diabetes by 55 percent when compared to those with low levels of the vitamin.
Vitamin D can be obtained from exposure to sunlight, vitamin supplements, and foods such as salmon and tuna. The National Institute of Health's Office of Dietary Supplements recommends that adults under the age of 50 get 200 IU of vitamin D each day. Adults ages 50 to 70 should get 400 IU daily, and adults ages 71 and above should have an intake of 600 IU each day.
