Old people had a different way of seeing these types of things. Our grandparents told us that when they were young they didn't have any electricity, they used to play outside with their friends, so they did more exercise than today.
Nowadays we take more care of our physical appearence than ten years before. Everyone wants to be good-looking and have a nice body. If we don't get the things that we want, we can resort to cosmetic surgery. With these advances in medicine our problems can be solved with an operation. Also since 1899 education has been avialable for everyone and has improved since it began.
Better education, more nourishing food, more intensive and varied exercise, medical advances-no wonder we are going to be the healthiest generation ever!