Something outside of what everyone else said(from what I saw in a skim), you’re referring to anabolic steroids, and exogenous ones in particular. A steroid is a just a biologically active molecule that can meet receptors inside a cell because it is shaped a certain way. Far more often, steroids refer to the corticosteroids used as anti-inflammatory agents. Ex: inhaled for asthma, rubbed into a mouth ulcer, swallowed for systemic effect (IBD, arthritis, many others).
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