
Originally Posted by
einstein1905
The best analogy would be saying what's worse on hair; test or DHT or it's analogs? Test isn't bad on your hair....the conversion of test to DHT is what facilitates hair loss. Akin to IGF-1 being the main mediator of most of the desired actions of GH. However, GH does have several actions independent of IGF-1, so they are not interchangeable, although they have overlapping results in many respects.
T3 or insulin is not necessary with either, but each has its place.