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This could contribute to age related loss of testosterone production. build muscle fast Human muscle system. It is known that reactive oxygen species can damage the steroidogenic pathway in vitro (Quinn, 1985). The authors of this study considered the dose of testosterone needed to accomplish this as a "contraceptive" dose. In men this is about 100 mg testosterone enanthate per week. build muscle fast Women bodybuilding. They will usually throw in some progesterone too. This is far below what you would need to be a competitive bodybuilder. It could be that in doses used by larger bodybuilders is too much and may actually cause permanent losses in testosterone production. build muscle fast Effects of anabolic steroids. On the other hand, these doses might be equally effective or even more so than contraceptive doses. Time will tell. In any case, a preservation of testosterone production in later life means decreased risk of osteoporosis, sarcopenia, loss of strength, mood swings, etc. Appropriate studies carried out on humans is clearly needed. Quinn PG, Payne AH. Steroid product-induced, oxygen-mediated damage of microsomal cytochrome P- 450 enzymes in Leydig cell cultures.
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