After a brief and failed stint at the Shanghai Sharks ,  in January 2009, Araújo signed with Brazilian club Flamengo for the 2009 season. The details of his contract were not revealed. He became the star of the club's team alongside Marcelinho Machado .  Six months later, at the end of the 2009 season, he signed a deal with Paulistano for the 2009-10 season, and in June 2010 he transferred back to Flamengo signing a two-year contract. For his second stint at Flamengo, Araújo, for numerology reasons, changed the spelling of his nickname to "Bàbby" and his jersey number from 55 to 66. 
The levels and limits of analytical detection have profound implications on supplement quality assurance program, demanding testing sensitivities that can only be met by highly specialised analytical laboratories, working to ISO 17025 standards. It is extremely uncommon for the manufacturing facilities used by supplement companies to have the capability to undertake such trace analysis, concentrating instead on the verification of label listings of specified contents. In most cases, supplement manufacturers will test products for other contaminants such as toxic substances, heavy metals, etc. and not necessarily for those substances that may give rise to a positive drug test for a professional athlete, such as nandrolone or ephedrine.
Anabolic androgenic steroids (AAS) were initially created for therapeutic purposes, and synthetic derivatives of the male hormone testosterone. Due its great anabolic effects, these drugs are being used on a large scale, for the improvement of sports performance. In this present study, we aim to show the history of it’ use, present their mechanisms of action, more particularly its use correlate with improved body composition, muscle mass, aerobic capacity and verify their possible side effects, analyzing their use therapeutic and indiscriminate, through direct scientific research with the sports. Sources were reviewed scientific the following search engines: PUBMED, LILACS and SCIELO. The results showed that in presence of a suitable AAS and diet can contribute to increases in body weight, particularly lean body mass and muscle strength gains achieved by high intensity exercise, these effects can be further potentiated, the use of supraphysiological doses, but in the aspect of aerobic power, there are not scientific evidence to support their improvement. Regarding side effects, the use of AAS, is related to several complications in the liver, cardiovascular system, reproductive system and psychological characteristics, always assigned by the non-therapeutic and abuse of AAS. Thus we conclude that the use of AAS, are directly linked to gains muscle mass, strength, as well several side effects, always assigned to abusive and indiscriminate doses, it is noteworthy that the scientific literature, still has a certain lack of studies, mainly randomized, controlled, with supraphysiological doses in human, so many effects are still unknown.