The Swazi population faces major health issues: HIV/AIDS and (to a lesser extent) tuberculosis are widespread. It is estimated that 26% of the adult population is HIV-positive. As of 2018, Eswatini has the 12th-lowest life expectancy in the world, at 58 years. The population of Eswatini is young, with, as of 2018, a median age of 22 years and people aged 14 years or younger constituting 35% of the country's total population.