Sexual behavior in male infertility.

Sexual behavior of 156 sterile males was investigated by personal interview in association with our previous report on fertile males. The intensity of sexual desire of sterile males is weaker than that of fertile males in the corresponding age groups, especially in 34-40 years of age. The frequency of morning erection in sterile males is highest between 24-30 years of age, and it decreases steadily as the age advances. On the other hand, there is no considerable reduction in the intensity of erection at sexual intercourse. In the group of 24-30 years of age, sterile males have lower frequencies of marital intercourse than fertile males. There is no remarkable difference by age in the feeling of orgasm. Six per cent of the sterile males are found to lack orgasm. Sixteen per cent of the wives expressed some dissatisfaction with their sexual life.