Kana mukadzi ane makore makumi matanhatu zvichikwira, murume ane makore makumi matanhatu zvichikwira. Izvi zvinokonzerwa nekubatanidzwa kwezvinhu zvinoti: genetics (redundant and varied genes present on sex chromosomes in women); sociology (such as the fact that women are not expected in most modern nations to perform military service); health-impacting choices (such as suicide or the use of cigarettes, and alcohol); the presence of the female hormone estrogen, which has a cardioprotective effect in premenopausal women; and the effect of high levels of androgens in men. Out of the human population in 2015, there were only 81 men aged 60 or over for every 100 women.
1: 1.05