Living in Canada I obviously did not watch this program but it seems to
me that they were probably referring to "subclinical hypothyroidism"
where TSH is clearly elevated, but free T4 and free T3 (of for that
matter total T3 & T4) are normal. There is quite a bit of literature on
this topic but as yet there does not appear to be a clear consensus on
whether to put patients on replacement therapy. At the Endocrine Society
Meetings 2 yr. ago at two separate "Meet the Professor" sessions on
subclinical hypothyroidism the two experts could not agree on whether to
treat or watch. This is likely a situation where the physician and
patient have make a joint decision.
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