To strengthen the anabolic properties of testosterone, more than 100 synthetic steroid derivatives have been described for human purposes. The anabolic effect promotes protein synthesis, muscle growth and erythropoiesis. In clinical practice, substances with anabolic effect are needed to overcome various catabolic states. However, none of these compounds are devoid of androgenicity. Androgenic and anabolic properties of anabolic steroids cannot be totally separated. Therefore, it is more appropriate to use the term anabolic androgenic steroids (AAS).
But one has to remember, Tbol dosages nowadays are more then mg per day, often exceeding 60mg. Therefore, more of a negative impact on liver, kidney and cholesterol would be expected. Just like many oral steroidsthe users cholesterol profile can change dramatically. HDL can fall and LDL can rise causing a bad environment for other cardiovascular related side effects and increase risk factors. Recent research has pointed the finger at cholesterol as being one of the most important steroid related side effects bodybuilders want to avoid.