Soon after the famous record by Roger Maris was beaten, another baseball player, Jason Giambi and others came out to say they often used prohormones. The Congress was forced to convene a hearing after which it determined that steroids were not really a threat. Rather, it ruled out that it was the responsibility of professional sports organizations to supervise and regulate their use. The law was updated and an official definition of the term steroid was given as follow: an “anabolic steroid” means any drug or hormonal substance, chemically and pharmacologically related to testosterone (other than estrogens), progestins, corticosteroids, and dehydroepiandrosterone).
Anabolic steroids can cause many adverse effects . Most of these side effects are dose dependent, the most common being elevated blood pressure , especially in those with hypertension ,  and harmful cholesterol levels: some steroids cause an increase in bad cholesterol and a decrease in good cholesterol .  Anabolic steroids such as testosterone also increase the risk of cardiovascular disease ,  or coronary artery disease   in men with high risk of bad cholesterol . Acne is fairly common among anabolic steroid users, mostly due to increases in testosterone stimulating the sebaceous glands .   Conversion of testosterone to dihydrotestosterone (DHT) can accelerate the rate of premature baldness for those who are genetically predisposed.