The most frequent sexual complaints made by men include erectile dysfunction, rapid ejaculation, and delayed ejaculation. Men can also complain of lack of sexual desire. Erectile dysfunction and ejaculatory difficulty generally increase with age and may relate to the reduced testosterone levels associated with aging. Sexual desire decreases with age as well, although this does not have to be a problem if both partners are satisfied with their sexual life. Medical conditions, such as heart disease and diabetes, can also interfere with sexual function in men. These conditions become more frequent with age, but are also impacted by health behaviors, such as alcoholism, smoking, diet, and exercise. Emotional factors play a role as well, including depression, stress, and relationship problems. A range of deep-seated conflicts about sexuality, stemming from important childhood relationships, can further complicate sexual function.