A new study finds obese people have 8 percent less brain tissue than normal-weight individuals and their brains look 16 years older. "That's a big loss of tissue and it depletes your cognitive reserves, putting you at much greater risk of Alzheimer's and other diseases that attack the brain," said researcher Paul Thompson of UCLA. "But you can greatly reduce your risk for Alzheimer's, if you can eat healthily and keep your weight under control."
