Azara Blog: Having a large waist is allegedly linked with Alzheimer's in later life

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Date published: 2008/03/27

The BBC says:

A big waistline in your 40s could almost triple the threat of dementia in old age, according to US research.

Obesity is a known risk factor for Alzheimer's, but scientists found even those of normal weight were more at risk if they had a large waist.

However, the study of 6,500 people, published in the journal Neurology, found obesity and bulging stomach was still the most dangerous combination.

An obesity expert said waist size was a good guide to future health problems.

Research linking obesity to dementia does not reveal precisely why being overweight can affect your ageing brain, but many specialists believe that associated problems such as high blood pressure, diabetes and high cholesterol levels may contribute.

As usual, all they have found is a correlation, not a causation, and given the further statement that "obesity and bulging stomach was still the most dangerous combination", it seems that even this correlation is a bit weak. But since it ties in with earlier research that links waist size with diabetes and heart disease (again, a correlation, not a causation), they can say pretty much anything they like and people will just take it as the gospel truth.

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