What the research shows
A recent study led by researchers at the Kinsey Institute, conducted in partnership with DatingAdvice.com, offers the first systematic look at how GLP-1s affect sexual function and desire. The findings are decidedly mixed: 18% of study participants reported increased sexual desire after starting the drugs, while 16% experienced decreased desire. Similarly, 16% reported improved sexual function, versus 12% who said it worsened. One striking pattern emerged: men reported being twice as likely as women to say GLP-1s made them more sexually adventurous.Why libido goes up or down
According to Dr. Justin Lehmiller, a senior research fellow at the Kinsey Institute, the reasons are layered. "Libido effects of these medications are due to a large number of factors," Lehmiller explains. "There are the direct effects of the drug on the body and brain, plus potential side effects." Beyond the medication's direct action, weight loss itself reshapes sexual experience through both physical changes and shifts in self-perception. When people feel lighter and more confident, their sense of sexual agency often follows. The psychological boost can be especially pronounced in communities where body image carries outsized cultural weight. For some users, GLP-1s offer not just metabolic benefits but a shift in how they experience desire and comfort with intimacy.The bigger picture
Because every person's GLP-1 journey differs, sexual side effects remain unpredictable. Dr. Carl Streed Jr., an associate professor of Medicine at Boston University, notes that GLP-1 receptor agonists work by mimicking the GLP-1 hormone, which regulates appetite and blood sugar. The ripple effects touch nearly every system in the body, making sexual response one of many areas worth monitoring. If you're considering or currently taking a GLP-1, discussing sexual side effects with your doctor is just as valid as reporting nausea or fatigue.Cover photo: Photo by Thirdman / Pexels
