Whenever a group of women settle into a long-term group situation — whether it’s moving into dorms, starting a new job, or maybe joining a coven? — someone always has to make the hilarious joke, “It’s only a matter of time before all our periods sync up! That’ll be hell on the plumbing! Har har har.”
Well, next time some annoying person says that, feel free to tell them they are full of shit because absolutely zero modern studies back up the idea that women’s periods synchronize when they’re in groups.
The myth comes from a 1971 study of a college dorm, but hasn’t been reinforced or backed up in any study since, according to the Guardian. Not even a study on lesbian couples found synchronicity to be a thing.
This news should put annoying jokes about group menstruation to bed. And most crucially, we can also stop questioning who’s the “alpha” in a group setting based on whose period refuses to budge month after month — because come on, we’ve all wondered this.
About The Author: Molly Mulshine
Molly Mulshine got her start covering local politics before working at Business Insider and the New York Observer. Follow her on Twitter: @mollymulshine
If you’ve tried every acne treatment on the market with little success, your gut may be the missing piece of the puzzle. According to Katie Stewart, Holistic Nutritionist and Founder of Katie Stewart Wellness, acne isn’t just a surface-level issue—it often stems from inflammation, gut imbalances, and poor digestion. Many people turn to creams, antibiotics,
Dixie, rocking long brunette locks paired with a unicorn print tee and white trousers, appeared along with her parents Marc and Heidi D’Amelio at the Natural Products Expo West on March 6th, 2025 to celebrate their new flavors for their Be Happy Snacks popcorn brand, launching Birthday Cake and Sweet & Salty flavors at the largest CPG food
With over 10 million followers across social media, Isabella Garcia has mastered the art of engaging, high-energy content. Whether she’s throwing powerful kicks in a kickboxing session, sharing gym motivation, or capturing the electrifying energy of a festival, Isabella knows how to keep her audience entertained. Turning Challenges into Strength Like many creators, Isabella has