12 min

The Order Your Siblings Were Born In May Play A Role In Identity And Sexuality Short Wave

    • Life Sciences

Listen on Apple Podcasts
Requires subscription and macOS 11.4 or higher

It's National Siblings Day! To mark the occasion, guest host Selena Simmons-Duffin is exploring a detail very personal to her: How the number of older brothers a person has can influence their sexuality. Scientific research on sexuality has a dark history, with long-lasting harmful effects on queer communities. Much of the early research has also been debunked over time. But not this "fraternal birth order effect." The fact that a person's likelihood of being gay increases with each older brother has been found all over the world – from Turkey to North America, Brazil, the Netherlands and beyond. Today, Selena gets into all the details: What this effect is, how it's been studied and what it can (and can't) explain about sexuality.

Interested in reading more about the science surrounding some of our closest relatives? Check out more stories in NPR's series on The Science of Siblings.

Email us at shortwave@npr.org — we'd love to hear from you.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

It's National Siblings Day! To mark the occasion, guest host Selena Simmons-Duffin is exploring a detail very personal to her: How the number of older brothers a person has can influence their sexuality. Scientific research on sexuality has a dark history, with long-lasting harmful effects on queer communities. Much of the early research has also been debunked over time. But not this "fraternal birth order effect." The fact that a person's likelihood of being gay increases with each older brother has been found all over the world – from Turkey to North America, Brazil, the Netherlands and beyond. Today, Selena gets into all the details: What this effect is, how it's been studied and what it can (and can't) explain about sexuality.

Interested in reading more about the science surrounding some of our closest relatives? Check out more stories in NPR's series on The Science of Siblings.

Email us at shortwave@npr.org — we'd love to hear from you.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

12 min

More by NPR

Up First
NPR
Fresh Air
NPR
Wait Wait... Don't Tell Me!
NPR
Planet Money
NPR
Throughline
NPR
Consider This from NPR
NPR