A member asked:

Hi, i had my thyroid removed last year due to papillary ca, and im currently on levothyroxine. just wanted to ask if recreational drugs (i.e. marijuana) would have an interaction with euthyrox? i read online that its safe but i want to make sure?

A doctor has provided 1 answer
Dr. Yvette Kratzberg answered

Specializes in Pediatrics

Minor effects: There are currently four studies published which have analyzed the effect of cannabis on human thyroid function. Accordingly, regular cannabis consumption was associated with only minor effects on thyroid function tests in serum. While the TSH-levels remained stable, total T4- and total T3-levels were found to be significantly lower in chronic cannabis smokers, when compared with nonsmokers

Answered 11/14/2020

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