Same thing with
coffee. Many centurions, when interviewed, say they have a daily cup
of coffee or wine. There is, of course, no definitive proof or explanation, but it would seem that when used in moderation, there are mind-altering substances that can make us live longer. This forum, of course, is for people who have problems with the 'moderation' part of the equation. Most people must always be on guard against a habit that can escalate unexpectedly in times of stress.