Viagra could be a useful treatment for Alzheimer's disease

A new study has found that Viagra, the erectile dysfunction drug was associated with a 69 per cent reduced risk of Alzheimer's when factors such as race, age, and sex are taken into account.

Men taking Viagra had a substantially lower risk of developing the brain disorder - according to findings from experts in Cleveland in the US.

Experts now say that more work should be done on the apparent link in a bid to find an effective treatment for the disease.

Lead investigator Dr Feixiong Cheng, from the Cleveland Clinic, said: "Because our findings only establish an association between Viagra use and reduced incidence of Alzheimer's disease, we are now planning a mechanistic trial and a phase two randomised clinical trial to test causality and confirm Viagra's clinical benefits for Alzheimer's patients."

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