In our society there are certain management board which briefly explain or not to apply testosterone-replacement therapy. Not recommended to use and apply this treatment if the patient has breast cancer or prostate cancer. With this therapy, patients who find in this group of risk should be very careful. Studies show that men who have survived prostate cancer can apply this type of therapy. Men who successfully cured of prostate cancer must carefully monitor their health. If their health deteriorates, they should visit a doctor. In order to apply this type of therapy men should talk with a doctor and do not hide anything from him. Visit to the doctor can prevent serious consequences. Necessary to avoid any risk of disease. There are some medical conditions that may adversely affect in conjunction with testosterone replacement therapy. Some men may be admitted to this therapy, but they must be careful and watch out for their health. This forced measures to prevent unpleasant consequences for health. Patients with a high number of red blood cells during this therapy have a higher risk of heart attacks and strokes. People who have congestive heart failure should abstain from therapy. Using substituting for testosterone therapy in such conditions person can get pitiable result. Doctors say that people with a weak heart failure can use and apply testosterone replacement therapy, but they should consult a physician. People with severe heart failure should avoid this therapy to save not only their own health but also their life. People need to carefully about their health and to protect it. Problems with the genitourinary system in combination with testosterone replacement therapy may complicate and increase urination problems. Benign Prostatic Hyperplasia can also cause trouble with testosterone replacement therapy. This therapy can be effective in the treatment of sleep apnea. Yet when using therapy, the best way it is consult with a doctor, because person can get serious implications.