How is it possible that some smokers and drinkers live up to age 70, when others die by age 25?

Some smokers and drinkers could live up into to their high 70 or higher because they either have good genetics. Or they drank and smoked in moderation. Just because someone else had lived a full life drinking or smoking does not mean that you should too. You can find other ways relieve your stress like exercise for example. It has been proven in many studies that exercise is one way to improve your quality of life in a multitude of ways. It can help clear your mind and get your mind of things that could be stressing you out and plus you can become stronger and feel like you have more energy.