Ah, well they were fun while they lasted.
According to Dr. Sabra Sullivan, a dermatologist from Jackson, Mississippi, man buns are causing traction alopecia, a form of balding, in men at a high rate.
Speaking to Mic.com, she said "it's really, really common".
"They're putting traction on the hair follicles that the hair is not really meant to take".
Traction alopecia causes acute baldness around the forehead and temples, which can be caused a direct result of hairstyles that pull the hair over long periods of time.
Sullivan also said that the effects of hairstyle could lead to follicle death, as well as permanent scarring, although it's not all bad news. She said that the main reason for this problem was the level of tightness people are applying to their bun. Her rule of thumb is simply keep it loose, slack the tension, then the effects may not be as severe.
"There are lots of men who wear man buns and don't get traction alopecia". They just have man buns instead, which is almost as bad.