Someone who weight trains says he uses T5 to lose weight. I know some also take T3. I struggle to understand how this is safe if you don't have Thyroid disease.
However I only take T3 now. Am I missing other important hormones? Would T5 benefit those who are under active and need to lose weight?
Does anyone have any info on all the thyroid hormones other than T3 & T4 and can we live ok without them?