Steroids produced in tablets also have disadvantages. The most important and negative of them is a toxic effect on the liver and stagnation of bile. As is known when ingesting tablets after absorption of a steroid drug, blood passes through the liver, causing toxic effects. Oral steroids can cause congestion and thickening of the bile, making it difficult to drain and when the gallbladder overflows, there are pain and a feeling of raspiraniya in the right hypochondrium. In order to stop this minus, the athletes protect the liver on oral steroids courses of steroids taking preparations that protect the liver, for example, Essence, Karsil, Liv 52, as well as choleretic preparations – flamin, holosas.
Testosterone is significantly correlated with aggression and competitive behaviour and is directly facilitated by the latter. There are two theories on the role of testosterone in aggression and competition.  The first one is the challenge hypothesis which states that testosterone would increase during puberty thus facilitating reproductive and competitive behaviour which would include aggression.  Thus it is the challenge of competition among males of the species that facilitates aggression and violence.  Studies conducted have found direct correlation between testosterone and dominance especially among the most violent criminals in prison who had the highest testosterone levels.  The same research also found fathers (those outside competitive environments) had the lowest testosterone levels compared to other males.