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The new generation of weight-loss drugs continues to make headlines, not only for the effects on waistlines, but now, it seems, for what some users are describing as unexpected changes below the belt.
Mason Newman, who lost an incredible 12 stone after taking Mounjaro, a diabetes drug known for suppressing appetite and promoting rapid weight loss, claims the medication didn’t just transform his health, it also added three inches to his penis.
The 28-year-old, who went from a size XXXL to a size S, told The Sun he had tried virtually every diet before turning to the increasingly popular GLP-1 drug.
“I tried the keto diet, water fasting. I tried juices. I tried eating nothing but two chicken breasts a day and nothing else,” he said. “That lasted three weeks and was more of a mental challenge than anything. I couldn’t stick to them.”
After seeing celebrities like Oprah reportedly try similar medications, Mason decided to give it a go.
“I sat on it for about a month and just thought, ‘F* it. Why not try it? It felt like a cheat code – an easy way to lose weight at the time,’”** he added.
The results were staggering as, within months, Mason had dropped from 23 stone to just 11 stone. But the real surprise came when he noticed another kind of transformation.
“The first thing I noticed was I grew three inches on my penis,” he laughed. “Because when the fat goes you actually do see more of yourself.”
Mason isn’t alone in reporting this side effect.
Across online forums, men taking GLP-1 drugs such as Mounjaro, Ozempic, and Wegovy have shared similar stories about a phenomenon now being dubbed “Ozempic penis” or “Mounjaro penis.”
James, a 55-year-old semi-professional sportsman, told Metro he also noticed a change after starting Wegovy.
“If anything, my penis looks bigger, because you lose body fat around it and your overall mass gets smaller,” he explained. “It’s like when you shave your bush and it makes it look bigger.”
He added that the transformation boosted both his body confidence and his sex life. “It’s made me enjoy sex more because I’m not as self-conscious of my body and I’ve got more energy,” he said. “I look in the mirror and think, ‘F* me, I look good.’”**
Doctors, however, warn that these “enhancements” are likely due to fat loss around the groin rather than actual physical growth.
According to experts, reducing visceral fat can make the base of the penis more visible, which then creates the illusion of increased size.
Dr. Stanton Honig, Chief of Reproductive and Sexual Medicine at Yale School of Medicine, told the outlet that while fat reduction is a key factor, improved cardiovascular health from GLP-1 drugs may also improve erectile function.
He advises men to see a doctor if they notice any unexplained changes to their sexual health.
While Mason says the results have been life-changing, the journey hasn’t been easy. The first few weeks on Mounjaro were rough, and he continues to experience nausea and fatigue.
“I still feel ill but I feel fortunate. I probably wouldn’t have had a life if I’d kept on eating,” he said.
He also worries about what will happen if he stops taking the injections. “I put a stone back on and the change in my mental health was crazy. I started getting anxiety and panic attacks again so I went back on,” Mason admitted.
“If I come off it without building healthy eating habits, I’d put all the weight back on. I’m stuck, but I suppose there are worse things to be stuck on," he added.
Despite spending around $2,600 a month on takeaways before, he now spends just $294 on his weekly 15mg injections. Mason says his lifestyle is completely different as he’s more active, exercises regularly, and even trains in MMA.
Experts warn that the weight-loss drugs can cause significant side effects, including nausea, fatigue, and muscle loss. Many people have also reported struggling to stop taking them without regaining weight.
For Mason and James, the physical and psychological transformations have been profound. James, who lost 20% of his body weight in six months, says the change has given him a new lease on life: “I think it’s a miracle drug, to be honest,” he said.
Mason echoed that sentiment, despite the lingering challenges: “I still feel ill but I feel fortunate."
