What is the natural life span of humans?

It depends on the region you are in. I will give a basic overview.

Canada- Over 80

USA- 77-80

Mexico- 75-77

Central America- 70-72

This is South America in General- 60-80 depending on which countries

Europe- 77-over 80

Asia can get anywhere from-65-72

India and countries bordering India- India is 67 and the bordering countries are 40-67

Middle East-70-77

Africa- Under 40-75

Australia-Over 80

Be more general next time!