In recent years, GLP-1 medications such as Ozempic, Wegovy, and Zepbound have surged in popularity. While these drugs have long been prescribed for type 2 diabetes, they are now FDA-approved for weight loss and have been shown to reduce the risk of certain cancers, heart disease, and cognitive decline. According to Dr. Holly Lofton, an obesity medicine specialist at NYU Langone Health, these medications work by reducing appetite, slowing stomach emptying, and shrinking fat cells hormonally.
Common Side Effects
Despite their benefits, GLP-1 drugs come with potential side effects. Dr. Naomi Parrella, chief of lifestyle medicine at Rush University, emphasizes that these powerful medications can cause mild to life-threatening issues. The most common side effects are gastrointestinal, including nausea, constipation, loose stools, and vomiting. In clinical trials, nausea affected 44% of users. These symptoms arise because the medication slows food movement through the gut, leading to acid reflux, heartburn, and burping.
Dehydration and Nutrient Deficiencies
Many users experience reduced hunger and thirst signals, which can lead to dehydration and inadequate intake of protein, fiber, and electrolytes. Parrella notes that people get full faster, consuming fewer nutrients.
Serious Adverse Effects
More severe risks include pancreatitis, gallstones, gallbladder inflammation, kidney failure from dehydration, and intestinal obstruction. Parrella warns that pancreatitis results from the pancreas overworking to produce insulin. Gastroparesis, a permanent condition where the stomach stops moving food, is a rare but serious risk currently subject to litigation.
Dental Health Issues
Dr. Elizabeth Walton, clinical director at Risas Kids Dental, reports that GLP-1s reduce saliva production, leading to dry mouth, increased cavities, and gum disease. Saliva normally protects teeth and gums from bacterial acids.
Managing Side Effects
Patients should report any vomiting to their doctor immediately, as it may signal dangerous complications. Parrella advises staying hydrated, prioritizing protein intake, and incorporating strength training. She also recommends stopping eating three to four hours before bedtime to prevent acid reflux. It is crucial to communicate with healthcare providers rather than ignoring symptoms.
Unknown Long-Term Risks
Since long-term data on GLP-1s is limited, Parrella stresses the importance of caution. Potential unknowns include cancer risk, metabolic rebound after stopping, and interactions with untested populations. Patients should weigh risks and benefits, and only use these medications if they meet approved guidelines.
Ultimately, GLP-1 drugs are safe and effective for many, but they are powerful and require careful management. Always consult a doctor and monitor your body's responses.
