Myth. Child mortality pulls down the average: http://www.livescience.com/10569-human-lifespans-constant-2-000-years.html http://www.livescience.com/10569-huma

Myth. Child mortality pulls down the average: http://www.livescience.com/10569-human-lifespans-constant-2-000-years.html http://www.livescience.com/10569-human-lifespans-constant-2-... While adult life expectancy has increased somewhat thanks to sanitation and antibiotics, there has never been a time when adult life expectancy was a mere 35 years.