Obesity fuels a big rise in the number of people with dementia in the future, say researchers.

The Alzheimer's Society charity has suggested that regular exercise and a healthy weight are important for reducing the risk.
One study conducted on 8,500 Swedish twins showed that people with a body mass index (BMI) greater than 30- who are classified as obese- were almost four times as likely to develop dementia as those with a normal BMI.
It was claimed that even those people who were clinically overweight with a BMI between 25 and 30, were 71 percent more likely to develop dementia.
Source-ANI