Testosterone reason why women outlive men: study
September 25, 2012, 12:14 am TWN
WASHINGTON--Scientists said Monday they have new evidence about why women live longer than men, from a study of historical data showing castrated Koreans far outlived their non-eunuch contemporaries.
The study, published in the scientific journal "Current Biology," used detailed genealogical records of the Imperial nobility during Korea's Joseon dynasty.
According to the data, most men, including kings and royal family members, died in their late-40s or early-50s. But noble-class eunuchs lived, on average, to the ripe, old age of 70.
Study author Kyung-Jin Min of South Korea's Inha University, told AFP the reason is probably that manly hormone, testosterone:
"Testosterone is known to increase the incidence of coronary heart disease and reduce immune function in males," he said.