Some topics about it:
Steroids can possibly cause men to start balding if they have a genetic predisposition towards Male Pattern Baldness. The gene for baldness is thought to reside in the X chromosome exclusively, so a good general indication of whether someone is genetically predisposed towards being bald is to look at the men on their mothers side. Chances are that if the majority of them are bald, then the person will be carrying that gene too. The reason steroids can cause premature balding is that the scalp reacts to Dihydrotestosterone (DHT) quite strongly, and many steroids can either convert to DHT or are derived from it. Of course, several anti-baldness medications can prevent this, such as Finasteride and Dutesteride. This is, of course, merely a cosmetic effect, and poses no real health issues. It could be catastrophic to a potential career with any one of a number of 80´s rock bands, but other than that, I can´t really see any real problems associated with hair loss; especially since it can be avoided when proper steps are taken and certain steroids are avoided.
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Hair loss
The use of highly androgenic steroids can negatively impact the growth of scalp hair. In fact the most common form of male pattern hair loss is directly linked to the level of androgens in such tissues, most specifically the stronger DHT metabolite of testosterone. The technical term for this type of hair loss is androgenetic alopecia, which refers to the interplay of both the male androgenic hormones and a genetic predisposition in bringing about this condition. Those who suffer from this disorder are shown to posses finer hair follicles and higher levels of DHT in comparison to a normal, hairy scalp. But since there is a genetic factor involved, many individuals will not ever see signs of this side-effect, even with very heavy steroid use. Clearly those individuals who are suffering from (or have a familial predisposition for) this type of hair loss should be very cautious when using the stronger drugs like testosterone, Anadrol 50®, Halotestin® and Dianabol.
In many instances the renewal of lost hair can be very difficult, so avoiding this side effect before it occurs is the best advice. For those who need to worry, the decision should probably be made to either stick with the milder substances (Deca-Durabolin® most favoured), or to use the ancillary drug Propecia®/Proscar® (finasteride) when taking testosterone, methyltestosterone or Halotestin. Propecia® is a very effective hair loss medication, which inhibits the 5-alpha reductase enzyme specifically in the hair follicles and prostate. This item offers us little benefit with drugs that are highly androgenic without 5alpha reduction however, the most notable offenders being Anadrol 50® and Dianabol. We must also remember also that all anabolic/androgenic steroids activate the androgen receptor, and can likewise all promote hair loss given the right dosage and conditions.