Researchers at Columbia University have established that moderate to intense exercise by the elderly may reduce by 40% their risk of developing brain lesions (or so called silent strokes).
Per the article:
"These 'silent strokes' are more significant than the name implies, because they have been associated with an increased risk of falls and impaired mobility, memory problems and even dementia, as well as stroke," said study author Joshua Z. Willey, MD, MS, of Columbia University in New York and a member of the American Academy of Neurology. "Encouraging older people to take part in moderate to intense exercise may be an important strategy for keeping their brains healthy."
The findings have been published in the 6-8-11 issue of the journal, Neurology.