Several men who take Ozempic report noticing an increase in the size of their penis, but experts believe this is an optical illusion, with the reduction of fat making the entire organ more visible.
In recent months, a growing number of men have taken to online forums to assert that the your penis size has increased since they started taking Ozempic or similar injections for weight loss.
The viral phenomenon, dubbed “Ozempic penis” has sparked heated debates among users and medical experts about whether the medicine actually influences size or whether the effect is just an illusion.
On , dozens of men shared personal “before and after” accounts. One user claimed to have gained about 2.5 cmwhile another reported an increase of 3.8 cm after seven months of use. “My wife has definitely noticed the difference,” wrote one commenter, celebrating her progress after losing weight, going from 126kg to under 90kg.
The debate has become even more heated after a recent study suggested that the average penis size of British men increased from 13.15 cm to 14.30 cm between 2022 and 2024. Social media users quickly linked the trend to the increasing use of Ozempic and similar medications.
While some insisted that the apparent growth could not be explained by weight loss alone, others offered more reasoned explanations. A Reddit user argued that the fat loss in the pubic area It probably makes the penis appear longer, noting that variables such as temperature, arousal and measurement technique can affect the perception of size. “Ozempic does not increase the size of your penis,” he wrote.
Medical experts tend to agree. Urologists and endocrinologists repeatedly state that Ozempic does not directly increase penis length. Instead, the weight loss effect of the medicine reduces the layer of fat that may obscure part of the organmaking it appear larger. Improved blood circulation after weight loss can also contribute to firmer erections, further enhancing the illusion of increased size.
Jen Caudle, known as “America’s family doctor”, demystified the idea on her YouTube channel. “I am not aware of any data that proves that these medications cause an increase in penis size,” he said. Caudle explained that the apparent growth is purely an optical illusion: the penis itself remains the same length, but the reduction in body fat causes a most of it is visible.
Other medical professionals share this opinion. Urologist Richard Viney says men’s penises often appear smaller as they age due to weight gain and an enlarged prostate. “It is theoretically possible that new drugs like Ozempic and Wegovy, which help patients lose weight, could make the penis look bigger“, said Viney, but stressed that this effect is not a direct result of the medicine.
Ultimately, doctors agree that there is no scientific evidence to support the idea of an “Ozempic penis.” Any increase noted, they emphasize, is due to the loss of excess fat — and not from the medication itself. As Caudle concluded: “If you want your penis to look bigger, the healthiest way to do it is is to lose weight”.
