Jim Gaffigan says he lost 50 pounds on Mounjaro

Comedian Jim Gaffigan told People he lost 50 pounds using Mounjaro, the tirzepatide injection made by Eli Lilly, after his weight had climbed to 270 pounds ^[1]. He said he chose to discuss the medication openly because he wanted to push back against the shame that can surround weight-loss drugs ^[1].

Gaffigan is one of a growing number of public figures who have described using GLP-1 or GIP-based medications and then talked about it in interviews rather than staying quiet. Mounjaro is approved by the Food and Drug Administration to treat type 2 diabetes, and it is prescribed off-label for weight loss in some patients, similar to how Ozempic is used off-label even though its FDA approval is for diabetes ^[1]. Weight loss is a documented side effect of these diabetes medications, which is part of why doctors sometimes prescribe them for patients who do not have diabetes ^[1].

Other celebrities have described similar experiences with tirzepatide-based Mounjaro, including actor Eric Stonestreet, who said he was prescribed the drug for his type 2 diabetes and had kept his diagnosis secret for years out of shame before speaking about it publicly ^[1]. Vanessa Williams told Hello! Magazine she started Mounjaro during menopause, saying her body had changed in ways she could not manage through diet and exercise alone ^[1]. Reality star Renee Graziano said on Instagram that she had lost 52 pounds on Mounjaro by May 2025 ^[1].

The theme of reducing stigma echoes comments from other celebrities who have discussed weight-loss medications. Oprah Winfrey told People in December 2023 that she had once viewed these drugs as "an easy way out" but changed her view, saying she realized she had been blaming herself for years for a weight predisposition that "no amount of willpower" could control ^[1]. She described taking such medication as "a tool to manage not yo-yoing" and said she was done with shaming from others and herself ^[1].

Why it matters for patients

When public figures describe their own use of GLP-1 or GIP medications, it can shape how patients and their families think about these drugs, including whether to bring up weight or diabetes treatment with a doctor without embarrassment. Gaffigan's stated reason for going public, to reduce stigma, mirrors comments from other celebrities in this space, including Stonestreet's account of hiding a diabetes diagnosis and Winfrey's description of self-blame around weight ^[1].

At the same time, celebrity accounts describe a range of outcomes and experiences with these drugs. Some, like Savannah Chrisley, have said they experienced side effects with one drug and switched to another ^[1]. Others, like Bunnie XO, have described serious mental health effects during treatment, including a period of suicidal ideation ^[1]. These varied accounts do not amount to clinical evidence, but they reflect the range of experiences patients may hear about when weighing information from sources outside a doctor's office.

Gaffigan's account, as reported, does not include details in available sources about side effects, how long he used the medication, or his current weight-management plans. Those specifics are not yet known from what has been reported ^[1].

What happens next

No further public statements from Gaffigan about his Mounjaro use, dosage, or long-term plans are detailed in the available reporting ^[1]. As with other celebrities who have discussed these medications, additional details may emerge in future interviews.