Men using popular weight-loss drugs like Ozempic and Wegovy are reporting an unexpected effect — a visible increase in penis size. Although not an official side effect, the phenomenon has sparked widespread discussion across online forums, particularly Reddit, where users are sharing their surprising experiences.
One user shared, “After three months on Ozempic, I lost a fair bit of weight… my junk definitely looks longer.” Another added, “I used to joke with my wife that this was bulls** ‘because we would’ve noticed two extra inches!’ Turns out I did get it. It’s when I’m flaccid.”*
Some men claim to have gained measurable length, with one saying, “I recently measured myself down there and noticed I gained about one inch,” while another reported, “I gained 1.5 inches in length. No joke. Like you I obviously know how long I was before I got very fat.”
A few commenters noted their partners had observed changes too. One wrote, “The wife today told me that she thinks my penis is larger from the meds.” Another user’s spouse confirmed, “It does get bigger/more hard with weight loss. I can confirm this with my own husband’s weight loss.”
Most explanations point to the loss of fat around the lower abdomen and pubic area, which can make more of the shaft visible — a well-documented effect of weight loss in general. Others attribute it to improved blood circulation, which can enhance erections.
Though some believe there might be a direct effect from the drugs, the general consensus in these discussions is that the size difference is visual rather than anatomical.
Users also admit there may be a psychological element at play. One commenter joked that people might simply “be seeing what they want to see.”
Despite the humor, the topic highlights broader interest in the physical changes that come with significant weight loss. While increased size below the belt might be a bonus for some, it’s not the primary reason most are turning to these medications — which are typically used to help manage diabetes or treat obesity.
As with any medication, more common side effects like nausea, fatigue, and reduced libido are also part of the discussion. But for some, the unexpected change has become a memorable — and confidence-boosting — perk.