If you come across testosteronecreams.org, you will read how testosterone acts as hormone replacement therapy. And what does it treat? They are those that are taboo topics for men namely: impotence, hair loss, and decreased sex drive.
Why do men dread these topics? Not many are willing to discuss them openly because they feel it is a minus on their person, because it reduces them to a certain level, and because they fear the worst. What a paradox it can be for some.
Inability to sustain an erection in a sexual activity can be caused not only by physical illnesses but also by psychological sickness. Though psychological impotence is rare, it does happen. Hormone replacement therapy or testosterone creams can be a cure. As to side effects, one has to research thoroughly.
Men affected by these problems have to deal with it squarely. It is best that with the first signs, one has to consult a doctor.