BBC News - Rise in obesity poses 'dementia time bomb'

One study of 8,500 Swedish twins showed that those 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. Obesity is a major concern that's going to have a major economic impact on the country” Even those who were clinically overweight, a BMI between 25 and 30, were 71% more likely to develop dementia. In England 24% of men and 26% of women are obese. Researchers from the UK Health Forum used computer models to compare what would happen if obesity rates stayed the same or increased to 46% of men and 31% of women by 2050, which has been predicted by some groups. They said rates of dementia would go from 4,894 cases in every 100,000 people over 65 to 6,662 cases in every 100,000 people over 65

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