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  1. 10-12-2010, 06:22 PM #1
    Jumbo18
    Jumbo18 is offline Associate Member
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    Does t4 suppress thyroid?

    since t4 converts to t3 and not directly t3 would supplementing with t4 suppress the thyroid as well or just make it work harder without suppressing anything?
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  2. 10-12-2010, 06:42 PM #2
    stevey_6t9's Avatar
    stevey_6t9
    stevey_6t9 is offline RIP Aziz "Zyzz" Sergeyevich Shavershian - Veni Vidi Vici
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    Yes it reduces TSH
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  3. 10-12-2010, 07:23 PM #3
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    scotty51312
    scotty51312 is offline Transformation Challenge Trainer
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    T4 isn't much use for anyone with normal thyroid function. Not good for cutting fat unless you already suffer from hypothyroidism.
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