Pile on the pounds in middle age increases your chances of developing dementia
(overweight and dementia)
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People who are obese in middle age are at almost four times greater risk of developing dementias such as Alzheimer's disease in later life than people of normal weight, according to a study released today.
The study, published in the journal Neurology, examined data on more than 8,500 people over the age of 65. Of the sample, 350 had been diagnosed with Alzheimer's disease or vascular dementia and a further 114 had possible dementia.
Scientists used records of the participants' height and weight in the decades before and found that those who had been overweight in middle age had a 1.8 times (80%) higher risk of being diagnosed with dementia in later life. But for obese people, classified as those having a body mass index (BMI) of 30 or above, the risk soared. People with midlife obesity had an almost four times (300%) higher risk of dementia.
"Currently, 1.6 billion adults are overweight or obese worldwide and over 50% of adults in the US and Europe fit into this category," said Weili Xu of the Karolinska Institutet in Stockholm, who led the research. "Our results contribute to the growing evidence that controlling body weight or losing weight in middle age could reduce your risk of dementia."
According to the Alzheimer's Society, around 750,000 people in the UK suffer from dementia, more than half of those with Alzheimer's. By 2021, a million people will be living with dementia.
Obese people are classified as those with BMI greater than 30, overweight people are those with a BMI between 25 and 30. Between 20 and 25 is classified as normal. Almost 30% of those in the study, 2,541 in total, had been either overweight or obese between 40 and 60 years of age. Read more: guardian.co.uk
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