Women who are obese have less chance of being brainy, doctors claimed yesterday. Medics have found that too much fat can cause loss of brain tissue.The damage is to areas known as the temporal lobes, which control memory, speech and hearing. And the risk increases by 16 percent with every kilogram of excess weight.Obesity could even trigger dimentia in older women, researchers discovered in a 24 year old study of Sweden.Team leader Dr. Deborah Gustafson said: 'Fat is a risk for women. Other studies have reported similar things.'More than a third of people are overweight. Researchers say obesity creates an...