Types of sexual health problems in men include disorders related to the desire for sex, or low libido, erection, ejaculation and reaching orgasm. There are some medical conditions that can lead to one or more of the disorders listed. The definition of low libido is a decreased or absent desire for sex. This disorder affects approximately 5% to 15% of men worldwide. Two conditions are necessary for the presence of sexual desire – normal levels of testosterone in the blood and sexual attraction to the partner. Risk factors associated with low libido in men are: Age, because over time the concentration of testosterone decreases; Alcohol consumption; Smoking; Poor quality nutrition; Medicine intake; Conditions requiring medication that lowers testosterone levels, such as depression, benign prostatic hyperplasia, prostate cancer. NEWS_MORE_BOX The listed are among the causes of low libido. Stress, fatigue, systemic diseases, hormonal problems such as hyperthyroidism can be added to them. Low libido is characterized by a reluctance to have sex, and if one is initiated, a problem may arise with achieving an erection. If the first case of erectile dysfunction is not preceded by other sexual symptoms and there is an adequate nocturnal erection, the cause is most likely psychological.