Scientists say they now 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 Koreas Joseon dynasty, which spanned more than 500 years from the late 1300s to the early 1900s.
According to the data, most men, including kings and royal family members, died in their late-40s or early-50s.
But noble-class eunuchs men who were castrated either by accident or because of social benefits lived, on average, to the ripe, old age of 70.
Study author Kyung-Jin Min of South Koreas 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.
Castration removes the source of male sex hormones, the study notes, adding the practice has already been proven to help many male animals live longer.
Castration also cuts off the possibility of reproduction, which Kyung-Jin stated could also be a factor.
According to one of the leading theories of aging, aging occurs at the expense of reproduction, he said, because the body has limited energy that can be used either to keep up reproductive function, or else to keep up everything else.
But although the eunuchs could not father children biologically, they married, adopted and raised children, and generally lived lives very similar to their non-castrated peers.
To eliminate socioeconomic factors that could have affected lifespan, the lifespan of the eunuchs was compared to the lifespan of men from other Yan-ban (noble class) families with similar socioeconomic status, Kyung-Jin said.
Contact Us Now
- Testosterone drives ego, reduces cooperation - Testosterone Prescription - July 9th, 2019
- Question: What Makes Men Sexy to Women? Answer: Low Stress, High Testosterone, Strong Immunity - Testosterone Therapy - June 23rd, 2019
- Your Life on Testosterone: Overly Sure, Unwilling to Listen to Anyone - June 13th, 2019
- Acidosis: The Hidden Health Destroyer - May 5th, 2019
- Dr Manny: Want to boost your testosterone? Try getting married - Testosterone Prescription - April 29th, 2019
- Low testosterone levels cause health woes - Testosterone Prescription - April 29th, 2019
- Co-sleeping with baby drops men’s testosterone levels - April 15th, 2019
- Testosterone reduces group think, cooperation, and less sheep-like mentality - April 1st, 2019
- Men with higher testosterone tend to lie less, study suggests - April 1st, 2019
- Increase in testosterone drug use - Testosterone Prescription - April 1st, 2019
- Five Myths About Low Testosterone And Testosterone Therapy - Testosterone Prescription - April 1st, 2019
- Environment trumps genes in testosterone levels, study finds - Testosterone Prescription - April 1st, 2019
- Hypogonadism Testosterone Archives - Testosterone Prescription - March 30th, 2019
- The top ten testosterone booster supplements: A review - March 28th, 2019
- Testosterone replacement therapy improves symptoms of metabolic syndrome - Testosterone Prescription - March 26th, 2019
- Testosterone shown to help sexually frustrated women- Testosterone Prescription - March 25th, 2019
- Testosterone therapy — good idea or not? - Testosterone Prescription - March 25th, 2019
- Testosterone, Viagra not a winning combination for erectile dysfunction - Testosterone Prescription - March 21st, 2019
- Too much testosterone makes for bad decisions, tests show - Testosterone Prescription - February 27th, 2019
- With testosterone, it's 'my way or the highway': UK study - Testosterone Prescription - February 27th, 2019
Word Count: 295