Estrogen side effects because the body aromatises the steroid, Gynecomastia is a constant concern especially when the dosage is high. Water retention can also create a problem by causing the muscle mass to lose definition because of accumulated water and fat. This can be countered by taking an anti-estrogen with the steroid. Methandienone (Dianabol) can have androgenic effects such as oily skin, acne and abnormal hair growth. On the other hand, it has been known to accelerate the process of hair loss and balding. In women, it can create significant masculine effects such as the deepening of the voice and a growth on the face. People prone to these effects should seek a milder alternative such as Deca-Durabolin.