Milk thistle (also known as silybum marianum) is plant in the Asteraceae family. Milk thistle is widely promoted as a liver supplement. It is sometimes sold as “Silymarin” or “Chardon-Marie” (derived from carduus marianus). On the internet, many websites and blogs are proclaiming that milk thistle can support thyroid hormone health simply by means of promoting liver health. Milk thistle extract is selling like hot cakes! However, in light of recent scientific discovery, caution — and hope! — is needed with regard to milk thistle’s downstream effects on thyroid hormone metabolism and signaling. First, let me introduce to you some …