All drug treatments come with risks, since drugs, by their very nature, are designed to block certain biological processes. In the case of hair loss, the drugs block androgens like testosterone from affecting hair follicles. This interruption can cause a subsequent hormonal disturbance that may affect other functions, such as sexual function and libido. We must weigh the risks with how determined you are to regrow hair. Other treatments may be more appropriate. Side-effects of drug treatments can include an increased risk of prostate cancer in men. Pregnant women should not touch crushed or broken tablets, as it can be absorbed via the skin and affect the developing foetus with the incorrect hormonal messages. The incorrect hormonal messages can interfere with sexual organ development, resulting in anatomical abnormalities.