According to a KFF poll, about one in eight, or 12%, of adults in the United States have used a GLP-1 medicine like Ozempic, Trulicity, Victoza, Mounjaro, Wegovy, or Zepbound. These drugs were originally developed to treat diabetes, but quickly started being prescribed for weight loss and other uses.

While they seem like wonder drugs, GLP-1 medicines do cause side effects and have risks. Nausea, vomiting, diarrhea, and constipation are common side effects. The drugs also can cause dizziness, headaches, and elevated heartbeat. 

Dr. Neil Iyengar is a breast medical oncologist who studies how diet and exercise can improve quality of life for people with breast cancer. He’s also prescribed GLP-1 medicines for the people he cares for.

Listen to the episode to hear Dr. Iyengar explain:

• how GLP-1 medicines work


• the risks these drugs may pose for people receiving chemotherapy, immunotherapy, or a CDK4/6 inhibitor


• why he works closely with a weight loss specialist or endocrinologist when prescribing these medicines


• why the medicines work best when a person also makes lifestyle changes