Body Builder Question:

Testosterone is the most important hormone in the male body. It plays a key role in determining energy, mood, libido, muscular development. Testosterone is converted into the end hormones estrogen and DHT as part of the natural metabolic process. The production of these two hormone by-products can sometimes cause side effects (such as hair loss or prostate enlargement).
While the range of Nortestosterone’s benefits are somewhat more limited than those of Testosterone, this hormone does not convert to DHT or estrogen and is therefore a better option for androgen-sensitive men. Nortestosterone is also a better choice for men who specifically seek the anabolic effects of Testosterone such as increased muscle size, strength, and more rapid recovery from training and injury.