Yuxian Ma, Olesya Ajnakina, Andrew Steptoe and Dorina Cadar

Dementia is a major health challenge that could steal away the opportunity for successful ageing of the population. A priority is to identify lifestyle factors that may reduce the risk of dementia, or even prevent it. The modifiable risk factors for vascular diseases — such as smoking, excessive alcohol intake, lack of physical activity, low intake of antioxidants and high intake of saturated fats — are receiving greater attention in this area because of their association with cognitive impairment and dementia in older people.

Obesity, which is linked to lifestyle behaviours, is an important modifiable risk factor. In our recent study carried out at the UCL Department of Behavioural Science and Health, we found that being overweight or obese was associated with a greater risk of developing dementia.

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