So I have a question for everyone:

Why would a bodybuilder or anyone interested in increasing circulating thyroid hormones use levothyroxine and liothyronine versus NDT, Natural Dessicated Thyroid Hormone? My guess would be dosage as its much easier to measure the synthetic amounts but I would assume the benefits of the more "natural" hormone would outweigh the dosage advantage to the synthetics. It would take more work monitoring NDT dosage but I believe it should be much easier to come off and regain full Thyroid function much faster. Plus, you also get T2, T1, and calcitonin on NDT while on synthetics, production of these hormones stop all together which I can imagine being bad for the body.

Your opinions are appreciated