Boldenone has strong anabolic effects and moderate androgenic effects. Trenbolone has both anabolic and androgenic effects. High levels of testosterone and the use of androgenic anabolic steroids will cause such cysts. Men with androgenic alopecia are more likely to have a higher baseline of free androgens. Nandrolone has a very high ratio of anabolic to androgenic activity. This results in a greater ratio of anabolic to androgenic activity compared to testosterone. Cimetidine, for example, is notorious for antagonizing androgenic testosterone and DHT receptors at high doses. Pregnenolone has no progestogenic, corticosteroid, estrogenic, androgenic, or antiandrogenic activity. DDT's main component, has little or no androgenic or estrogenic activity. Mestanolone is an AAS, with both androgenic and anabolic effects. This is involved in its reduced ratio of anabolic to androgenic activity. These can broadly be grouped into anabolic, androgenic, and other uses. Ethisterone is a weak progestin with weak androgenic activity. Dienogest is one of the only 19-nortestosterone derivative progestins that does not have androgenic properties. The diagnosis of androgenic alopecia can be usually established based on clinical presentation in men.