A new study has suggested that people who are overweight are less likely to develop dementia, a brain condition that affect’s thinking and memory, versus people with a healthy weight. In fact, overweight people were 30% less likely to develop this illness than individuals who are at a normal weight. However, healthy people were 34% more likely to develop dementia. This study is quite surprising but why is it so? There are no biological findings to support this conclusion, however many tests and findings have found a link between obesity and lower cases of dementia.