Does Levothyroxine Really Cause Cancer? What Dr. Ardis Got Wrong with Evan H. Hirsch, MD

The headlines say your thyroid medication might cause cancer. Before you stop taking it, read this. A 2021 study of over 600,000 people found that long-term levothyroxine users had higher rates of several cancers. That number spread quickly, and for good reason. It sounds alarming. But the study had a critical flaw: it could not separate the effect of the medication from the autoimmune disease…