Genetics play a major role in what AAS you should be taking. Take for example different peoples body composition (endomorph, ectomorph, mesomorph). Your genetics play a part in every aspect of body development. Being able to use certain drugs and their effectiveness depends on genetics. Some people are more prone genetically for gyno and estrogen, therefore anti-prolactin and estrogen blocker drugs are needed to control their manifestations during cycles. I would not say that people that are more prone to estrogen should stay away from using AAS, but rather do more research to insure better levels during their cycles.
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