life expectancy - an average period that someone might live
in 1900 men were expected to live to 44
in 2018, males life expectancy was 78.95, females life expectancy was 82.8
effects of
social class - betteroff people can access health care easier - betters their health and well being making them live longer
gender - women tend to outlive men as men take more risks
region - eg north of the UK is poorer than the south, being born in north = having access to worse education which ruins the ability of getting desired grades to do certain jobs leading to doing an unskilled job