Although antibiotics are prescribed frequently, misuse of these drugs can contribute to the emergence of resistant bacteria that is more difficult, or even impossible, to combat. It is also likely to have a negative effect on the immune system. For instance, during the bacterial attack, some good bacteria are also killed. The most common of these good guys are responsible for the production of B vitamins and lactase, as well as aiding in fighting tumors, lowering high cholesterol levels, and improving digestion. Without these friendly bacteria, the body is more susceptible to other pathogens that can cause immunological, neurological, or endocrinologic problems. This overgrowth of pathogens such as yeast (Candidiasis) has been linked to food allergies, autoimmune disorders, and chemical sensitivities, among others.
Not shortly after Roger Maris record was broken, another baseball player, Jason Giambi and various other athletes were either suspected of, or proven to have, taken anabolic steroids. Again, Congress convened a hearing, and just as they did the first time in 1990, they did not determine that steroids were a danger, but rather that the danger was more in protecting professional sports organizations. The updated statute has been updated to proscribe pro-hormones also The definition of an anabolic steroid as defined currently in the United States under (41)(A) is that "anabolic steroid" means any drug or hormonal substance, chemically and pharmacologically related to testosterone (other than estrogens , progestins, corticosteroids, and dehydroepiandrosterone (7).