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Examples of ergogenic aids are creatine, androstenedione , anabolic steroids, major pain medication, barbiturates, and amphetamines.
Androgenic products, namely androstenedione , are testosterone precursors, and transform to this hormone in the body.
Synthesis of testosterone and androstenedione from cholesterol occurs by the same pathways as indicated for synthesis of the male sex hormones.
In one study, coral homogenates metabolized estradiol into estrone and testosterone into androstenedione and androstanedione.
But all three substances - creatine, androstenedione , and anabolic steroids - increase a naturally occurring substance in the body to promote the building of muscle tissue.
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