Just read this in the paper. It can be encouraging. Let me quote " Exercise may improve brain function because it boosts blood flow to areas used for memory.....The six-year study of 1.740 people, 65 and older, found those who exercised three or more times weekly had up to a 40 per cent lower risk for dementia than those less active." There's lots more but they're saying it's as simple as walking 3 times a week. Anyone else see this? The study was done in Seattle, USA and does seem to be a reasonable group, not the old lunatic fringe advocating who knows what.