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#1 |
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Dieting I swear!
Super Moderator
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Thyroid rebound
People keep asking about this one.
N Engl J Med 1975 Oct 2;293(14):681-4 Recovery of pituitary thyrotropic function after withdrawal of prolonged thyroid-suppression therapy. Vagenakis AG, Braverman LE, Azizi F, Portinay GI, Ingbar SH. The pattern of thyrotropin secretion was analyzed in seven euthyroid women, before and after withdrawal of long-term thyroid hormone, by serial measurements of thyroid 131l uptake, serum thyroxine, tri-iodothyronine, and thyrotropin concentrations, and the response to thyrotropin-releasing hormone. During exogenous hormone administration, 131l uptake was suppressed, and serum thyrotropin concentrations before and after administration of thyrotropin-releasing hormone were undetectable. After withdrawal of exogenous hormone, thyrotropin secretory function was transiently impaired, as indicated by undetectable basal thyrotropin concentrations together with absence of response to thyrotropin-releasing hormone, and subsequently by normal values of basal thyrotropin concentration and normal responses to releasing hormone while serum thyroxine and tri-iodothyronine concentrations were subnormal. Decreased thyrotropin reserve persisted for two to five weeks. Detectable values of serum thyrotropin (less than 1.2 muU per milliliter) and a normal 131l uptake usually occurred concurrently in two to three weeks. Serum thyroxine concentration returned to normal at least four weeks after hormone withdrawal. |
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Kinesiology Vote @ Top 25 Deads Comp Bench
Motivation Bench form MaxCalc Charles Poliquin When I let go of what I am, I become what I might be. Lao-Tzu I don't know any sources so don't ask - thanks |
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#3 |
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Dieting I swear!
Super Moderator
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Even a small amount causes suppression, but my whole point was whats the big deal with a couple weeks when you've been on for YEARS? People seem to think that hardcore shutdown is going to be a problem, I never had any rebound at all although I wasn't on for years, only 6 weeks.
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Kinesiology Vote @ Top 25 Deads Comp Bench
Motivation Bench form MaxCalc Charles Poliquin When I let go of what I am, I become what I might be. Lao-Tzu I don't know any sources so don't ask - thanks |
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#4 |
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Aus BB
Join Date: Sep 2005
Location: Australia
Posts: 5
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I heard that it has a bigger shutdown effect on woman. Not sure how true that is.
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Aus BB
Aus Bodybuilding Forum, Home of Australian Bodybuilding |
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