Extra vitamin B doesn't slow Alzheimer's, report shows

Doctors had hoped vitamin B could reduce the rate of brain cell death and reduce dementia. But the supplements did not help memory. Instead they seemed to increase depression in patients taking them.

This suggests high doses may do seniors more harm than good.

So far, proven treatments for Alzheimer's disease are few in number. There are medications to slow the disease and some evidence suggests moderate exercise can also help patients keep their memory longer.

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