Cancer(excluding pancreatic and couple others) has been cured. This is 0% risk to me. Feel free not to believe me, it doesnt bother me at all. The discussion is habit change.

>heart disease,

Heart disease is a bit wider, but risk here is very manageable. Cerebral/stroke also very manageable risk. I really should get a gym membership.

>accidents—matter more.

Absolutely. I'm ridiculously paranoid about accident risk. I dont speed while driving anymore. But this goes to far more than that.

>Would you change your habits to maximize lifespan?

Absolutely, I made that huge change. Multiple ways.

> Stop eating meat,

The opposite, far more meat, less sugar and carbs. If I had a butler robot cooking for me, id have them cooking all of the meats.

>?drive less, exercise obsessively?

I absolutely should exercise obsessively. I should do better here I mnow.

>How far would you go?

Further than you expect.