OCT 10, 2017 05:52 AM PDT

What's the Deal with the Third Nipple?

WRITTEN BY: Xuan Pham

Many of our body parts come in pairs - eyes, ears, hands, feet, and so on. In rare instances when the rule of two is exceeded, the result is unusual to say the least. One of the more well-documented exception is the nipple - the third nipple, to be more specific.

Third nipples are known medically as supernumerary nipples. Although these can occur anywhere on the body, they more commonly occur along the body's "milk lines" - two vertical lines that run from each underarm, through the nipple, to the groin.

The presence of more than two nipples is considered rare, affecting less than 0.5% of Americans (around 200,000). However, some people argue the condition may be more common since third nipples don't usually look like a fully formed nipple and may be easily confused with moles.

If you do find a 'nipply'-looking mole along your mammary lines, it could indeed be a third nipple. And if so, you'd share a commonality with Mark Wahlberg, Lily Allen, and Tilda Swinton!
About the Author
  • I am a human geneticist, passionate about telling stories to make science more engaging and approachable. Find more of my writing at the Hopkins BioMedical Odyssey blog and at TheGeneTwist.com.
You May Also Like
SEP 08, 2018
Videos
SEP 08, 2018
How Stem Cells can Help us Model, Treat and Repair Eye Disorders
Researchers now have straightforward ways to generate stem cells, which have tremendous therapeutic potential, from specialized adult cells....
SEP 09, 2018
Videos
SEP 09, 2018
Mass elephant poaching in Botswana
Ninety dead elephants have been found in Botswana recently, most large bulls whose tusks have been removed. Botswana has historically had a zero-tolerance...
SEP 09, 2018
Videos
SEP 09, 2018
Black Hairy Tongue - A Shocking Antibiotic Side Effect
A 55-year-old woman experienced a rare side effect of antibiotics while being treated for an infection....
SEP 10, 2018
Videos
SEP 10, 2018
The Difference Between Marijuana and Hemp
What's the difference between Marijuana and Hemp? Watch the video below to find out exactly how they differ. Both hemp and marijuana belong to the same...
SEP 23, 2018
Plants & Animals
SEP 23, 2018
The Benefits of Vertical Farming
In some parts of the world where agriculture becomes a problematic endeavor, vertical farming offers a potential solution. Newark, New Jersey is a great ex...
OCT 09, 2018
Space & Astronomy
OCT 09, 2018
Putting the Mars 2020 Rover Together - Behind the Scenes
Unless you’ve been living under a rock, you should know by now that NASA’s planning to send another rover to the Martian surface to investigate...
Loading Comments...