Cultural habits are probably the dominant factor. The extension of longevity these last years is mainly due to people stopping smoking. http://www.sciencedaily

Cultural habits are probably the dominant factor. The extension of longevity these last years is mainly due to people stopping smoking. http://www.sciencedaily.com/releases/2011/02/110207112539.htm http://www.sciencedaily.com/releases/2011/02/110207112539.ht... Don't smoke, drink coffee moderately, have low cholesterol, and be wealthy.