Those studies have been grossly over-interpreted of course. Each group (classical music/dance/walkers/crosswords etc etc) claim that their activity slows senility. And the answer is YES. they all seem to have some effect - but whats often ignored is that its the set of old folks that can do all those things that age slower (everybodh DUH!). Very few studies were 'proactive'- taking a set of random people and asigning them activities or no activities. Of course thats nuts too - how do you stop someone in the 'no crosswords) from, say, enjoying bingo? Jury is still out...
Most studies that make it to the front page have been homogenized ad interpreted until the results are not all that meanigful. IIRC, several studies suggested that it's the combinationn of mental and physical activity in dance that retards the aging process.
Eh. Jury's out, and while it is, why not dance, just in case?
