system
Given the following post, respond as if you're commenting on Reddit:
human
What's worse for your health - smoking or being fat?
gpt
I like this question. Let's refine it. At 18, one person starts smoking one pack a day. Another person immediately becomes 75 pounds overweight on their 18th birthday. Which one is most likely to live till the average age of 77? Assume both are white males from similar family history and backgrounds.