Science Friday Science Friday

People are microdosing GLP-1s for weight loss. Is it safe?

Oct 29, 2026 · 18m

Summary

This episode explores the emerging trend of microdosing GLP-1 weight loss drugs, featuring experts Dr. Joey Madtingly and Dr. Jorge Moreno. They discuss the lack of clinical data supporting doses below FDA-approved levels and the risks associated with compounded medications from unregulated telehealth clinics. The conversation highlights concerns about unknown impurities, inadequate marketing disclosures, and the need for rigorous research to ensure patient safety.

Topics discussed

Sponsors and show introduction The rise of microdosing GLP-1 weight loss drugs Defining microdosing and the lack of clinical consensus The evidence gap: FDA trials vs. microdose efficacy Patient anecdotes and the challenge of funding research Listener stories: Telehealth and self-managed dosing Risks of compounded medications and unknown impurities Sponsor break The role of compounding pharmacies in the medical ecosystem Marketing concerns and the issue of access and cost Side effects for patients who do not meet obesity criteria Listener story: Compounded semaglutide with B12 additives Chemical interactions and the need for safety studies Regulation, quality control, and telehealth pharmacy opacity Final advice: Follow-up care and transparency with providers Closing remarks and sponsor
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