Mahjong - more than a game for the elderly

Dementia and Alzheimer's disease, conditions that usually affects older people(65 and above) and the risk increases when one get older. My dad being 61 years old this year, definitely has increasing risk of getting them.... but well, why am I not too worried for him actually?

Well, it is because he plays mahjong almost every weekends....
Researches have shown that it is effective in preventing elderly in getting dementia....
and is currently used as therapy interventions with elderly patients, especially the demented patients.

Some articles/ researches included for your interest:

1. Playing mahjong may prevent dementia
2. 5-person mahjong system for senile dementia (Hong Kong)
3. The game of mahjong - therapy and cultural heritage

Addendum: So, those who likes to play mahjong, please continue playing them BUT the above does not take into account the consequences when one loses MONEY. = p

And please don't forget to ask me along if you are short of one "LEG" in a mahjong game. = )