I have been trying to figure out how to help my peeps live longer. I succeeded in getting one guy to live to age 68 by using hand gel, vitamins, and fruit to keep his health bar really high. I tried it again with a woman who was one of the first pair of twins born in my game, so I was sort of fond of her. She was 65, and I had her health bar completely maxed out with healthy store items and exercise, but she died anyway. What determines when peeps die, and is there really anything we can do to delay it?