How do you calculate life expectancy?

when you die, you stop.

This "when you die you stop" is the typical I-don't- care-attitude that denialists use before it's their turn for something they desire others to support them on in any way---like their off spring of whom they want the best for. How do you get through your day with such an attitude? If it is one time deal, then why? Think about it.

Ultimately IT CAN get down to genes. There are people who live up to a hundred-years-old-area and smoked and drank booze. However,

The next time you go to a hospital. Tell me how many fat doctors you see. Next ask, how many medical doctors die before 70. You will be amazed by the results.

I guess their ten years of college don't make them know the answer. I know people who think all medical doctors are idiots. So, the next time they get a serious physical pain, they need to see an auto mechanic.

It's what denial does.