It has also been shown that children who experienced severe trauma have shorter life expectancies and a higher risk of dying of heart disease and cancer.
Japan Living to 83 on average, the Japanese have long had one of the highest life expectancies.
This is not only because the world's overall population grew, but also because life expectancies () rose.
Life expectancies for men and women in Shanghai climbed to 80.
The researchers estimated the impact on life expectancies using mortality data from 1991-2000.
