TSH: how low is too low and what is the "normal" range?

Stumbled across this article about hypothyroidism treatment paradigm shift:


This article says something about TSH I had read on a pharmacist.com article some years back.  Although the low end of the TSH scale defined by "official" groups is 0.3-0.5, a Scottish study determined that there is no risk of arrhythmia or reduced bone density, so long as 0.04<TSH<0.4.  So given what functional medicine has said about TSH upper limit, it appears the "normal" range should be something like 0.1<TSH<2.0.  The article implies (but does not explicitly state) that TSH should not be used for diagnosis.

1 Reply

  • Hi Eddie, thanks for posting this link. It looks to be a good article that we could show GP's.

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