The recent surge in popularity of Ozempic, a drug used for weight loss, has also led to the discovery of an undesirable side effect: a gaunt-looking face. The phenomenon has been increasingly documented across social media.

Since the rise in these medications, Dr. Paul Jarrod Frank, a dermatologist in New York who used the term “Ozempic face,” told Today this week that he has seen the side effect "every day in patients.”

What is ‘Ozempic face’?

The side effect is the result of major weight loss in a short amount of time.

"What patients come in complaining of is, 'My face just looks really gaunt. I've lost a lot of volume in my face,’” Dr. Elizabeth Houshmand, a dermatologist in Dallas, told ABC News.

It’s been described as facial deflating given that fat is lost in all areas of the face, unlike buccal or cheek fat removal, which only takes fat out of certain areas of the face.

“When it comes to facial aging, fat is typically more friend than foe,” Dr. Oren Tepper, a plastic surgeon in New York, told the New York Times. “Weight loss may turn back your biological age, but it tends to turn your facial clock forward.”

What is Ozempic? 

A brand name for the drug semaglutide, Ozempic, along with exercise and nutrition changes, helps improve “blood sugar control in adults with type 2 diabetes mellitus (DM)” according to the U.S. Centers for Disease Control and Prevention (CDC).

The U.S. Food and Drug Administration (FDA) approved Ozemic to treat type 2 diabetes in 2017, while it approved Wegovy, another brand of semaglutide, to treat obesity in 2021.

The manufacturer of the drugs, Novo Nordisk, told TODAY last year, “We do not promote, suggest or encourage off-label use of our medicines” (the drugs come from the same ingredients but dosages differ). Ozempic has been used off-label, leading to shortages, and sparking criticism that the drug was unavailable to those who qualify for its intended use.

A number of celebrities, including Chelsea Handler, have taken the drug, though Handler says she took it unwittingly.

Experts hope the drug is seen as a remedy for a chronic illness that has far too often been stigmatized.

“We really need to treat obesity as we treat any other chronic disease, with effective and safe approaches that target underlying disease mechanisms,” Dr. Ania Jastreboff, an obesity medicine doctor at Yale University, told People.

This story was originally featured on Fortune.com

More from Fortune:
Olympic legend Usain Bolt lost $12 million in savings to a scam. Only $12,000 remains in his account
Meghan Markle’s real sin that the British public can’t forgive–and Americans can’t understand
‘It just doesn’t work.’ The world’s best restaurant is shutting down as its owner calls the modern fine dining model ‘unsustainable’
Bob Iger just put his foot down and told Disney employees to come back into the office