Reverse T3 and the “T3-only” protocol

Reverse T3 is a thyroid molecule that is similar to regular T3, except one of the iodine atoms is in a different position.  This makes it inactive.  T3 is the active hormone that the body uses. High reverse T3 (rT3) levels or a “bad” reverse T3 ratio (Free T3 divided by rT3 is less than … Continue reading

T3’s negative effect on other hormones

Apparently some people can remain on T3-only indefinitely and actually feel fine, or certainly better than they ever did on T4 medications.  Others, however, become worse, because the high T3 levels have side effects and create imbalances in other hormones.  In men, high T3 levels will cause sex … Continue reading