The reasons for low libido are very complicated, mainly divided into organic and functional. Age, physical weakness, lack of physical exercise, cerebral cortex dysfunction, decreased testosterone level or some endocrine disorders, male reproductive system diseases, etc. can all make sexual desire low. There are many reasons for low sexual desire. With the increase of age, sexual desire, sexual frequency and penile erection hardness decrease slightly after 40 years old, especially at 50 ~ 60 years old. This phenomenon of declining sexual desire with age cannot be considered as morbid, but a physiological change of male sexual response. The body suffers from systemic diseases, malnutrition, weak constitution and cold sexual desire; Cerebral cortex dysfunction strengthens the inhibition of sexual excitability, which will affect the whole process of sexual function when it is strong; Disorder or even abnormality of mental and psychological state can also lead to low sexual desire; Endocrine dysfunction, such as low testosterone level, low thyroid function and low pancreatic function, can make the sexual excitement of the original effective stimulation on sexual organs and sexual reflex insufficient, causing sexual dysfunction; Male reproductive diseases, such as phimosis, penis and huge inguinal hernia, often make sexual intercourse difficult or impossible, causing long-term low sexual desire; Some drugs such as alcohol and antihypertensive drugs can also cause low sexual desire.
Because they don't understand the relationship between age change and sexual desire and sexual response, some people regard sexual activity in their first marriage or youth as sexual function as a standard, and mistakenly equate sexual activity with sexual intercourse. As a result, the normal sexual response changes after aging are considered as low libido or other sexual dysfunction, which is a misunderstanding, not real low libido.