Exercise in later life is key to cutting risk of dementia, new research claims


Those who suppress fit have larger brains, better memories and clearer thinking, a read published in scientific journal NeuroImage has found.

It showed exercise can slacken up on the damage that builds up with age and lessens the risk of developing degenerative plagues such as Alzheimer’s.

Scientists at Kentucky University put 30 adults elderly 59 to 69 on a treadmill to measure the ca city of their hearts and lungs.

An MRI scanner was worn to assess the blood flow to their brains and scientists found fitter people had portlier brains.

The test revealed that maintaining fitness through ordinary activity is “instrumental in preserving brain health late in life”.

In a isolated study, German scientists saw similar improvements in the hippocampus, the area of the perception associated with memory.

A total of 21 adults aged 60 to 77 go forwarded through a three-month fitness programme in which they experienced unstop improvements in their memory.

They wrote: “The changes in fitness, hippocam l blood stream and volume were positively related to changes in recognition memory and break of dawn recall for complex s tial objects.”

Scientists at the National Institute on Ripening, in Baltimore, did similar tests on mice.

They com red mice that had been exercised on a locale with others who were not.

In the fit mice cells in the hippocampus were actively copying while those in the unfit mice were in decline.

Dr Henriette van Praag, a co-author of the news per in NeuroImage, said: “For most people, physical health and brain form once seemed to have little connection.

“This has been converted by discoveries in rodents that wheel-running increases production of new neurons in the hippocampus.”

Dr Clare Walton, probe manager at Alzheimer’s Society, said: “We know that what is compelling for the heart is good for the head and people who are physically active throughout time have a reduced risk of developing dementia.”

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