The problem with the people you are talking about is that they didn't cut back as soon as they started to have minor medical problems. Having 4 drinks a day for a couple years in your 30s doesn't cause permanent liver damage that will kill you. But continuing to have 4 drinks a day AFTER being told that you are overweight and have elevated blood test results due to drinking can kill you.
This becomes even more important as you age. Someone who starts smoking heavily in their 60s is far more likely to get a blood clot than someone in their 20s
This becomes even more important as you age. Someone who starts smoking heavily in their 60s is far more likely to get a blood clot than someone in their 20s