People who tank up on coffee may reduce their risk of developing type 2 diabetes, new research suggests.The study of more than 126,000 men and women found people who drank more full-test coffee had a lower risk of the blood sugar disease than those who drank less or none of the beverage. The effect was greatest for men whose coffee intake topped five cups a day. This group had about half the odds of developing diabetes as men who didn’t drink any regular coffee.