It would be interesting if it were possible to do a study of those who attended Woodstock and compare them to age matched controls that didn’t attend. Wonder if those that attended have a higher overall mortality rate over the years.
Should be easy to find them. Everybody I've ever met who was old enough to have been at woodstock has told me that they were at woodstock.
I suspect you would need to control for the war in Vietnam too. Might have had an effect on mortality rates of one of those groups...
My 69 year old brother in law was at Woodstock with his brother. Health is fine. The kids all laugh as he tells us stories. Crazy times. He is fairly conservative.