Controlling body weight in older age may help to prevent new dementia, a new study suggests.

The research, led by the University of Wolverhampton, examined 38,219 participants and 4,479 dementia cases worldwide, through a systematic search and review.

Studies from younger and middle age populations have demonstrated excessive body weight increases the risk of incident dementia. But the contrary has been the case for most reported findings of overweight and obesity in older age, following a paradox on their beneficial impacts on reducing mortality. Read more here