Researchers at the University of East Anglia in Norwich think that chocolate might prevent heart disease in women with diabetes. But to prove their point they need 150 women to volunteer for their study and eat chocolate every single day for a year. Meanwhile, researchers at Yale are pretty sure that chocolate can prevent preeclampsia in pregnant women. Five or more servings of chocolate a day could be enough to reduce risk of developing the condition by at least 40%. [CNN, Telegraph]