Unfortunately, the same study that tells us that MENT is 10x as anabolic as testosterone, and 4x as androgenic, also tells us that MENT is 12x as suppressive to serum gonadatropins as testosterone. For this reason, it is very appealing to scientists who have studied it for use as a male contraceptive – and ended up calling it “ The Optimal Androgen for Male Contraception ” (Ann Med. 1993 Apr;25(2):199-205.). In addition, and partly owing to its inability to be 5a-reduced, MENT is converted (via the aromatase enzyme) to a very potent form of estrogen – which can cause gynecomastia (enlarged breast tissue in males), and several other nasty side effects.
The paper explores a new principle related to Einstein’s theory of relativity. According to the authors, after the Canadian Journal of Physics notified them on July 17 about the decision to retract the paper, they asked the editor to publish their objection “to defend our sound point of view, and beyond this, our scientific reputation.” But Kholmetskii — who lists his affiliation at Belarus State University in Minsk, and Yarman , a professor at Okan University in Istanbul —told us that the editor found their response “inappropriate.” As a result, the authors turned to aiXiv to protest the retraction.
The most commonly used AAS in medicine are testosterone and its various esters (but most commonly testosterone undecanoate , testosterone enanthate , testosterone cypionate , and testosterone propionate ),  nandrolone esters (most commonly nandrolone decanoate and nandrolone phenylpropionate ), stanozolol , and metandienone (methandrostenolone).  Others also available and used commonly but to a lesser extent include methyltestosterone , oxandrolone , mesterolone , and oxymetholone , as well as drostanolone propionate , metenolone (methylandrostenolone), and fluoxymesterone .  Dihydrotestosterone (DHT; androstanolone, stanolone) and its esters are also notable, although they are not widely used in medicine.  Boldenone undecylenate and trenbolone acetate are used in veterinary medicine .