That idea that people only lived till their 30s is a misapplication of some statistics. That was the "average" age only because there was so much child mortality pulling the average down.
There was a lot of childhood deaths from infections and diseases that the kids had no immunity for, and so on. But if you managed to survive to adulthood, you'd be fine until your 50 or 60s, when age related maladies catch up with most people. And since you weren't eating shitty McDonald's food, you would have less diabetes and heart disease, but it was still there. Lack of food was more of a problem, but periodic fasts are good for people.
That idea that people only lived till their 30s is a misapplication of some statistics. That was the "average" age only because there was so much child mortality pulling the average down.
There was a lot of childhood deaths from infections and diseases that the kids had no immunity for, and so on. But if you managed to survive to adulthood, you'd be fine until your 50 or 60s, when age related maladies catch up with most people. And since you weren't eating shitty McDonald's food, you would have less diabetes and heart disease, but it was still there. Lack of food was more of a problem, but periodic fasts are good for people.