Risks associated with thyroid supplements | Peter Attia, M.D.

This clip is from “Ask Me Anything” episode # 89 (Ep. # 308) of The Drive which was released on 9/21/26. In the full episode, we cover: -The two thyroid labs Peter checks on every patient, and the situations that call for a more complete workup -The case for a lab-first approach to thyroid symptoms, and the conditions that most often masquerade as thyroid disease -The normal range for TSH rises with age; how misreading it leads to older adults being treated when they should not be -The problem with standard blood tests for free T3 and free T4, which are least reliable exactly when accuracy mat