Study: Castration Adds Years to Men's Lives

More

A genealogical record of Korean eunuchs finds the male sex hormone related to significantly diminished longevity.

eunuchsmain.pngPublic Domain

PROBLEM: It's suspected that there is a biological trade-off between reproduction and longevity, the theory being that our mechanisms of repairing damaged genetic material are limited and thus relegated to the most evolutionarily advantageous repair work. Propagating our genes, it would follow, trumps living to see/attempting to control the lives of proceeding generations. The male sex hormone is implicated in this theory, and taking into account that fact that women tend to live significantly longer than men, may be responsible for limiting men's lifespan.

METHODOLOGY: Because sometimes you can't offer enough cash or college credit to put together a randomized control experiment, researchers did a (very) retrospective study of Korean eunuchs from the Chosun dynasty, which stretched from the late 14th to the early 20th century. The eunuchs, a class of nobles employed as guards at the royal palace, preserved their lineage through the adoption of castrated sons and kept detailed genealogical records, which the researchers cross-verified with other historical accounts.

RESULTS: Averaging a lifespan of 70 years, the eunuchs lived about 14 to 19 years longer than cohorts from a similar socio-economic background. The group of 81 eunuchs included three centenarians among their ranks -- making them 130 times more likely to celebrate their 100th birthday than, for example, men in the present-day U.S.

CONCLUSION: The seniority achieved by the eunuchs supports the theory that the male sex hormones decrease men's lifespan.

IMPLICATOINS: Another study that used data from a population in a mental hospital also indicates that castrated men live longer, although a third looking at castrati singers did not show an increase in lifespan along with their expanded vocal range. While these new findings may not be enough to make anyone seriously consider asking whether added years at the expense of one's genitals are worth living, they may lead to further understanding of the relationship between reproduction and aging.

The full study, "Lifespan of Korean Eunuchs," is published in the journal Current Biology .

Jump to comments
Presented by

Lindsay Abrams is an assistant editor at Salon and a former writer and producer for The Atlantic's Health Channel.

Get Today's Top Stories in Your Inbox (preview)

CrossFit Versus Yoga: Choose a Side

How a workout becomes a social identity


Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register. blog comments powered by Disqus

Video

CrossFit Versus Yoga: Choose a Side

How a workout becomes a social identity

Video

Is Technology Making Us Better Storytellers?

The minds behind House of Cards and The Moth weigh in.

Video

A Short Film That Skewers Hollywood

A studio executive concocts an animated blockbuster. Who cares about the story?

Video

In Online Dating, Everyone's a Little Bit Racist

The co-founder of OKCupid shares findings from his analysis of millions of users' data.

Video

What Is a Sandwich?

We're overthinking sandwiches, so you don't have to.

Video

Let's Talk About Not Smoking

Why does smoking maintain its allure? James Hamblin seeks the wisdom of a cool person.

Writers

Up
Down

More in Health

Just In