Medullary thyroid carcinoma (MTC)

Adverse events on the FDA labels, with the canonical evidence anchors.

Definition

Rare neuroendocrine tumor of thyroid C-cells. GLP-1 medications carry a black-box warning based on rodent data; no increased human MTC incidence has been demonstrated. Contraindicated in patients with personal/family history of MTC or MEN-2.

Does GLP-1 cause cancer? MTC evidence →

Definition curated by Weight Loss Rankings — sourced from FDA labels and peer-reviewed PubMed literature, never AI-generated summaries.

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