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Fetal Testosterone May Program Boys' Behavior
By Live Science Staff last updated
Testosterone levels in the womb might program certain behaviors later in life, new research shows.

Honey marketed for 'sexual enhancement' could be dangerous, FDA warns
By Nicoletta Lanese published
The FDA sent warning letters to four companies.

What does transgender mean?
By Alina Bradford, Timothy Williamson published
Reference The term transgender describes people whose gender identity differs from the sex to which they were assigned at birth.

Why do some animals have sperm 20 times the length of their bodies?
By Cameron Duke published
Sperm come in tons of sizes, and it all has to do with how they have to find the egg.

Porn is the top source of 'sex education' for young adults
By Stephanie Pappas published
Pornography was listed as the top source of information about sex for 18- to 24-year-olds, a troubling ranking given that pornography is not meant as sex education.

Sperm don't swim anything like we thought they did, new study finds
By Stephanie Pappas published
New high-speed video reveals human sperm don't swim like we thought.

Why do women have orgasms?
By Isobel Whitcomb published
There are a number of ideas about why the female orgasm happens.

Removing Pubic Hair Probably Won't Increase Your Risk of STDs, Study Finds
By Rachael Rettner published
Removing pubic hair may not increase your risk of sexually transmitted diseases, according to a small new study.
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