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IS SYNTHETIC THYROXIN REALLY ANY SUBSTITUTE FOR NORMAL THYROID FUNCTION?

  • 01-03-2010 6:38pm
    #1
    gerajella
    Closed Accounts Posts: 35 ✭


    Speaking as someone who has had to take in thyroxin in the maximum strength daily since birth, and this, at a time well before the newborn screening of CHT was available [and 30 years before it was made mandatory in the UK], I have ask, in those circumstances, how can it be possible for manmade thyroxin to render the patient to normal health, since the thyroid's job is not only to make it's hormones, but to direct it to be released in larger amounts, at key developing milestones? as far as I know, doctors in the 1950s and 60s didn't adjust the dosage to mimic the action of the healthy gland at these crucial life events. Also, the laboratories don't put any t3 [pure thyroxine] into the tablets, on the grounds that this t4 is converted into t3 in the system. Yet the normal thyroid still puts out a small fraction of t3 into the system. there must be a reason for that.


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