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  • Testosterone is the quintessential male hormone, and it supposedly makes men more manly, right?

  • Sure, but females have testosterone, too. So what do they do with it?

  • Hey everyone, thank you for watching DNews today. I'm Trace.

  • Testosterone is a sex hormone produced in the adrenal glands, ovaries, and testes.

  • We commonly associate it with men, because it's necessary for the production of sperm.

  • But according to the journal "Maturitas," it's the most abundant sex steroid in women throughout their lifespan.

  • In cisgender populations, men have 10 times more testosterone in their body than women,

  • pushing around 4 to 10mg of the hormone per day through their bloodstreams.

  • Testosterone is recognized by the general population, but not well understood,

  • and even scientists haven't mastered it yet.

  • Those commercials calling for people with "low T" to talk to their doctorsthat's crazy town!

  • According to "The British Medical Journal" only 0.1% of men in their forties have low T.

  • So why do people care?

  • Because we think of it as the hormone for masculinity.

  • High testosterone is equated with manliness and mating success, though, interestingly, it is not associated with actual attractiveness.

  • In one study testing testosterone on female behavior,

  • women who had believed they'd received testosterone behaved more aggressively toward other women.

  • What we think, can influence this whole deal.

  • Most people learned in sex ed that testosterone production kicks in during male puberty.

  • The pituitary gland at the base of the brain begins releasing luteinizing hormone, or LH, and follicle-stimulating hormone, FSH.

  • Together they tell the testes to make testosterone causing development of the penis and testes,

  • larger muscles, deeper voices, increased height, and so on and so on.

  • But in females, 50% of their T comes from their ovaries and adrenal gland throughout their lives;

  • the rest is naturally converted from base androgens to testosterone elsewhere in the body as needed.

  • Androgens are sort of like, the building blocks of hormones,

  • like estrogen and testosterone.

  • Testosterone is the skeleton key to so much in our bodies, and the levels in each and every person will vary.

  • Testosterone naturally fluctuates throughout the day, and over our lifetimes.

  • Levels usually peak in the morning and then drop throughout the day.

  • In men, they peak during puberty, lowering by 1–2% every year after 40. That's normal.

  • But female testosterone production is less well understood overall; which can cause all sorts of issues.

  • It seems to help grow healthy bones, which is great for women.

  • But upping intake can cause blood clots, cancers, and other deadly issues in all humans.

  • Successful athletes often have more testosterone, male and female both, but not necessarily.

  • Some women with the highest natural levels top men with the lowest natural levels.

  • A single study found 13.7 % of women with testosterone levels higher than the average female athlete.

  • And when the International Olympic Committee tested the female athletic population of the

  • 2011 Daegu, South Korea World Championships they found some women

  • —1.5 to 4.7%—at the lowest male average levels, while 1.8% of the men were within the typical female range.

  • As women enter menopause, testosterone production halts, perhaps to lower libido, but we don’t really know why.

  • Female testosterone has been connected with female body shape, fertility,

  • and physical changes, athletic abilities, making women nicer to others to gain social standing;

  • it's even been associated with ladies crying to release it to chemically communicate to other people around them.

  • Another study found women taking testosterone were more opinionated and less productive while in groups, focusing more on themselves.

  • And yet another study on top of that, found that testosterone boosted lady libido,

  • but study participants in that one were also on antidepressants.

  • So again, testosterone is not well understood; and even though we know more about it with men,

  • we're still kind of bumbling overall.

  • There's not even a strong connection between testosterone and physical violence;

  • but if you ask the average person they would say that there is.

  • What we do know, is testosterone prepares the body to respond to competition, sexuality, and changes in social status.

  • But outside of that, science gets a little nebulous.

  • Ultimately, there doesn't seem to be an exact testosterone number that's right for everyone.

  • Do you have a science question? Do you want to know more about something?

  • Go ahead and tell us down in the comments.

  • But why doesn't the general public have a better understanding of sexuality and sexual health?

  • Maybe because we're educating wrong?

  • Julia's got a great video on sex edwhat works and what doesn't. Check that out right here.

  • But more recently, in 2010, funding was also put towards what's called comprehensive sex ed.

  • This can also emphasize waiting to have sex, but it also talks about how to keep yourself safe.

  • Like how to use a condom, what birth control options are out there, that kind of thing.

  • Thank you for watching DNews. We'll see you tomorrow with more videos.

Testosterone is the quintessential male hormone, and it supposedly makes men more manly, right?

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C1 US testosterone female hormone male production study

How Much Testosterone Do You Have?

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    王健安 posted on 2016/06/16
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