The TedTalk link below explores that we are living longer (going from an average life span of 50 to 80 over the course of the 1900s.
Plus we're not dying from heart problems lately as Americans, but still metabolic syndrome (diabetes, obesity, high BP) still a big problem.https://youtu.be/ReCvreRPdeY
How You Grow Before You're Born (very low or high birth weight) and the 1st two years of your life determine whether you will have a high risk for disease later on...
If very low weight when young, their heart and pancreas are smaller so function under more stress and the pancreas will not