Testosterone replacement therapy (TRT) is exploding in popularity among men. TRT has been touted online as a cure-all for everything from low energy to poor mood and even as a way to increase masculinity itself. But how much of the buzz is backed by science? Host Rachel Feltman talks with journalist Stephanie Pappas about the realities behind the trend. They explore who truly benefits from TRT, the overlooked risks—including fertility loss—and the rise of private clinics offering testosterone.
 
This episode was made possible by the support of <a href="https://www.yakult.co.jp/english/">Yakult</a> and produced independently by Scientific American’s board of editors.
 
Recommended reading:
<a href="https://www.scientificamerican.com/article/why-testosterone-therapy-could-harm-some-men-though-it-could-help-others/">What Most Men Don’t Know about the Risks of Testosterone Therapy</a>
 
Email us at <a href="mailto:sciencequickly@sciam.com">sciencequickly@sciam.com</a> if you have any questions, comments or ideas for stories we should cover!
Discover something new everyday: <a href="https://www.scientificamerican.com/getsciam/?utm_source=promotion&utm_medium=podcast&utm_campaign=may24-marketing2024_subscribetext&utm_term=LP_subscribe_v1_s1_podcast">subscribe</a> to Scientific American and <a href="https://www.scientificamerican.com/account/email-preferences/?utm_source=promotion&utm_medium=podcast&utm_campaign=may24-marketing2024_signuptext&utm_term=LP_signup_v1_s1_podcast">sign up</a> for our daily newsletter. 
 
Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper, Naeem Amarsy and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Testosterone replacement therapy (TRT) is exploding in popularity among men. TRT has been touted online as a cure-all for everything from low energy to poor mood and even as a way to increase masculinity itself. But how much of the buzz is backed by science? Host Rachel Feltman talks with journalist Stephanie Pappas about the realities behind the trend. They explore who truly benefits from TRT, the overlooked risks—including fertility loss—and the rise of private clinics offering testosterone. This episode was made possible by the support of Yakult and produced independently by Scientific American’s board of editors. Recommended reading: What Most Men Don’t Know about the Risks of Testosterone Therapy Email us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover! Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter. Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper, Naeem Amarsy and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices

Testosterone replacement therapy (TRT) is exploding in popularity among men. TRT has been touted online as a cure-all for everything from low energy to poor mood and even as a way to increase masculinity itself. But how much of the buzz is backed by science? Host Rachel Feltman talks with journalist Stephanie Pappas about the realities behind the trend. They explore who truly benefits from TRT, the overlooked risks—including fertility loss—and the rise of private clinics offering testosterone.
 
This episode was made possible by the support of <a href="https://www.yakult.co.jp/english/" rel="noopener noreferrer">Yakult</a> and produced independently by Scientific American’s board of editors.
 
Recommended reading:
<a href="https://www.scientificamerican.com/article/why-testosterone-therapy-could-harm-some-men-though-it-could-help-others/" rel="noopener noreferrer">What Most Men Don’t Know about the Risks of Testosterone Therapy</a>
 
Email us at <a href="mailto:sciencequickly@sciam.com" rel="noopener noreferrer">sciencequickly@sciam.com</a> if you have any questions, comments or ideas for stories we should cover!
Discover something new everyday: <a href="https://www.scientificamerican.com/getsciam/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_subscribetext&amp;utm_term=LP_subscribe_v1_s1_podcast" rel="noopener noreferrer">subscribe</a> to Scientific American and <a href="https://www.scientificamerican.com/account/email-preferences/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_signuptext&amp;utm_term=LP_signup_v1_s1_podcast" rel="noopener noreferrer">sign up</a> for our daily newsletter.&nbsp;
 
Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper, Naeem Amarsy and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

What No One Tells You about Testosterone Replacement Therapy

Best-selling science writer Mary Roach talks about her latest book, Grunt: The Curious Science of Humans at War.

  Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Best-selling science writer Mary Roach talks about her latest book, Grunt: The Curious Science of Humans at War. Learn more about your ad choices. Visit megaphone.fm/adchoices

Best-selling science writer Mary Roach talks about her latest book, Grunt: The Curious Science of Humans at War.

&nbsp; Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

The Science of Soldiering: Mary Roach's Grunt

Environmental concentrations of certain insecticides slashed honeybee drones' living sperm counts. Christopher Intagliata reports. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Environmental concentrations of certain insecticides slashed honeybee drones' living sperm counts. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices

Environmental concentrations of certain insecticides slashed honeybee drones' living sperm counts. Christopher Intagliata reports. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

Pesticides Act as Honeybee Contraceptives

Best-selling science writer Mary Roach talks about her latest book Grunt: The Curious Science of Humans at War. 
 

Best-selling science writer Mary Roach talks about her latest book Grunt: The Curious Science of Humans at War. 
&nbsp;

The Science of Soldiering: Mary Roach's Grunt

Reintroducing mountain lions to the eastern U.S. could save human lives and reduce injuries by lowering deer populations and preventing car–deer collisions.

  Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Reintroducing mountain lions to the eastern U.S. could save human lives and reduce injuries by lowering deer populations and preventing car–deer collisions. Learn more about your ad choices. Visit megaphone.fm/adchoices

Reintroducing mountain lions to the eastern U.S. could save human lives and reduce injuries by lowering deer populations and preventing car–deer collisions.

&nbsp; Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

Cut Road Deaths with Mountain Lions

A 2,000-year-old latrine in China provides the first hard evidence that people carried diseases long distances along the ancient trading route.

  Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

A 2,000-year-old latrine in China provides the first hard evidence that people carried diseases long distances along the ancient trading route. Learn more about your ad choices. Visit megaphone.fm/adchoices

A 2,000-year-old latrine in China provides the first hard evidence that people carried diseases long distances along the ancient trading route.

&nbsp; Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

Silk Road Transported Goods--and Disease

Inbred canaries sang songs with less pure tones, and at slightly different pitches, than their outbred cousins—and female canaries seemed to be able to tell the difference.

  Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Inbred canaries sang songs with less pure tones, and at slightly different pitches, than their outbred cousins—and female canaries seemed to be able to tell the difference. Learn more about your ad choices. Visit megaphone.fm/adchoices

Inbred canaries sang songs with less pure tones, and at slightly different pitches, than their outbred cousins—and female canaries seemed to be able to tell the difference.

&nbsp; Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

Inbred Songbirds Croon out of Tune

A thermal spike linked to the solar system’s largest storm explains weather on gas-giant planets Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

A thermal spike linked to the solar system’s largest storm explains weather on gas-giant planets Learn more about your ad choices. Visit megaphone.fm/adchoices

A thermal spike linked to the solar system’s largest storm explains weather on gas-giant planets Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

Great Red Spot Helps Explain Jupiter's Warm Upper Atmosphere

Fish flourished in creeks in which human engineers helped shore up beaver dams made weak by poor timber availability.

  Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Fish flourished in creeks in which human engineers helped shore up beaver dams made weak by poor timber availability. Learn more about your ad choices. Visit megaphone.fm/adchoices

Fish flourished in creeks in which human engineers helped shore up beaver dams made weak by poor timber availability.

&nbsp; Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

Beaver Dams Strengthened by Humans Help Fish Rebound

Great frigate birds may stay aloft for up to two months, eating and sleeping on the wing.  Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Great frigate birds may stay aloft for up to two months, eating and sleeping on the wing. Learn more about your ad choices. Visit megaphone.fm/adchoices

Great frigate birds may stay aloft for up to two months, eating and sleeping on the wing.&nbsp; Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

Frigate Bird Flights Last Months

Biologists have identified a third species—a yeast—in some lichens, shaking up what's always been known as a two-party system. Christopher Intagliata reports. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Biologists have identified a third species—a yeast—in some lichens, shaking up what's always been known as a two-party system. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices

Biologists have identified a third species—a yeast—in some lichens, shaking up what's always been known as a two-party system. Christopher Intagliata reports. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices" rel="noopener noreferrer">megaphone.fm/adchoices</a>

For Lichens, 3's Not a Crowd

Science Talk is a podcast of longer-form audio experiments from Scientific American--from immersive sonic journeys into&nbsp;nature to deep dives into research with leading experts.

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Science Talk is a podcast of longer-form audio experiments from Scientific American--from immersive sonic journeys into nature to deep dives into research with leading experts.

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