Our life span is from about 50 years in poor countries to about 90 years in rich countries. If our ecology was better we would be living longer. Only by moving from Russia to America I extended my life and the life of my family members. For example, all but one of my older relatives have died from stress and disease in Russia. My younger brother is now near death in Russia, again from stress and poor ecology. I wish I could help him.
Moving to America allowed us to have more children and not only that; the children got better education and nutrition. Still, ecology even in America could be much better.