Home Health Video: As you get older, exercise for better brain health

Video: As you get older, exercise for better brain health

People who exercise later in life may better protect their brain from age-related changes than those who do not. Researchers at the University of Edinburgh found that people over 70 who took regular exercise showed less brain shrinkage over a three-year period than those who did little exercise. Psychologists and Neuroimaging experts, based at the University did not find there to be any benefit to brain health for older people from participation in social or mentally stimulating activities.

Greater brain shrinkage is linked to problems with memory and thinking and the researchers say their findings suggest that exercise is potentially one important pathway to maintaining a healthy brain both in terms of size and reducing damage. The researchers also examined the brain’s white matter – the wiring that transmits messages round the brain. They found that people over 70 who were more physically active had fewer ‘damaged’ areas – visible as abnormal areas on scanning – in the white matter than those who did little exercise.

What is more, the researchers found that the over-70s taking regular exercise had more grey matter – the parts of the brain with nerve cell bodies. The Edinburgh team used MRI scans to measure the volume of brain tissue and the volume and health of the brain’s white matter in almost 700 people. They studied levels of physical activity which ranged from moving only for necessary housework to more strenuous forms of exercise such as keep-fit or taking part in competitive sports.

Dr Alan Gow explains why people who exercise in later life may better protect their brain from age-related changes than those who do not.

David Calder has been a broadcast journalist for over 30 years. Before moving to the Caledonian Mercury, he worked for the BBC (national and regional) as well as parts of ITV and the World Service. He worked for prestigious programmes such as The Money Programme, You & Yours, Today and The World at One. He spent two years making mini-documentaries for Radio 5 Live and was a regular correspondent for CBC (Radio Canada). He was a regular reporter on various news and current affairs programmes on BBC Scotland as well as producing or presenting (sometimes both) science, legal affairs and arts programmes. As well as his contributions to the Caledonian Mercury, he is also a freelance producer in Scotland for the satellite channel, Al Jazeera.