Smoking, high blood pressure, diabetes, obesity linked to unhealthy brain

By: | Updated: March 14, 2019 9:54 PM

The strongest links were with areas of the brain known to be responsible for our more complex thinking skills, and which deteriorate during the development of Alzheimer's disease and dementia.

Smoking, high blood pressure, Smoking demerits, diabetes, obesity, unhealthy brain, Alzheimer disease, blood vesselsThe study examined the associations between seven vascular risk factors and differences in the structures of parts of the brain. (Reuters)

Here is another reason to let go of unhealthy addictions. According to a recent study, factors that influence the health of our blood vessels, such as smoking, high blood and pulse pressures, obesity and diabetes, are linked to less healthy brains. The study examined the associations between seven vascular risk factors and differences in the structures of parts of the brain.

The strongest links were with areas of the brain known to be responsible for our more complex thinking skills, and which deteriorate during the development of Alzheimer’s disease and dementia. The researchers, led by Simon Cox, a senior research associate at the University of Edinburgh (UK), examined MRI scans of brains of 9,772 people, aged between 44 and 79, who were enrolled in the UK Biobank study – one of the largest groups of people from the general population to have data available on brain imaging as well as general health and medical information.

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All had been scanned by a single scanner in Cheadle, Manchester, and most of the participants were from the north-west of England. This is the world’s largest single-scanner study of multiple vascular risk factors and structural brain imaging. The researchers looked for associations between brain structure and one or more vascular risk factors, which included smoking, high blood pressure, high pulse pressure, diabetes, high cholesterol levels, and obesity as measured by body mass index (BMI) and waist-hip ratio.

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According to Cox, lifestyle factors are much easier to change than things like your genetic code – both of which seem to affect susceptibility to worse brain and cognitive ageing. These have all been linked to complications with the blood supply to the brain, potentially leading to reduced blood flow and the abnormal changes seen in Alzheimer’s disease

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