: If caloric restriction in mamals works be changing cellular activity into a survive and protect mode, potentially increasing lifespans, why didn’t our prehistoric ancestors with low caloric budgets not live long?

Question

: If caloric restriction in mamals works be changing cellular activity into a survive and protect mode, potentially increasing lifespans, why didn’t our prehistoric ancestors with low caloric budgets not live long?

In: Biology

Answer 1

I don’t think it has as much to do with calorie intake as it is to do with modern science and environmental factors. If they got so much as a cut on their finger, bacteria could enter and infect them very easily. Plus add the fact that they used to hunt animals for food, play with fire and not wear much clothing.