The main thing that gives me hope is the media. We have radio TV magazines and books so we have the possibility of learning from societies that are remote from us like Somalia. We turn on the TV and see what blew up in Iraq or we see conditions in Afghanistan.
I really believe the only way to stay healthy is to eat properly get your rest and exercise. If you don't exercise and do the other two I still don't think it's going to help you that much.