How could living healthy affect our way of living?

If everyone learned  to live healthy the world would be a better place to live. There is all sort of problems that occur in our world.  If we live healthy it could not just benefit our world but also could benefit us as well.  We have drinkers and alcoholics or problem drinkers in this world and drinking too much occasionally can lead to heart failure as said in How drinking affects your health . Smoking is also a problem that if fixed can helps us have a healthier way of living. As said in Harmful Affects of Smoking Cigarettes that One in two lifetime smokers will die from their habit. Half of these deaths will occur in middle age. This advice benefits us because we do alot of unhealthy things in this world like eating more junk food then we do healthy foods. We don't get alot of exercise either, that's why some of us are different sizes, skinny fat etc...  I think if everyone asked themselves this question we would have alot of different answers, but probably alot of good ideas.