Australia's life expectancy is the fourth highest in the world for males and the third highest for females. Life expectancy in Australia in 2014–2016 was 80.4 years for males and 84.6 years for females. Australia has the highest rates of skin cancer in the world, while cigarette smoking is the largest preventable cause of death and disease, responsible for 7.8% of the total mortality and disease. Ranked second in preventable causes is hypertension at 7.6%, with obesity third at 7.5%. Australia ranks 35th in the world and near the top of developed nations for its proportion of obese adults and nearly two thirds (63%) of its adult population is either overweight or obese.