Semen, saliva, gastrointestinal fluid and blood are all human body fluids, but the smell of semen is the most significant. Semen is not as simple as other body fluids. It is a mixture. In addition to sperm, other seminal plasma components in semen are composed of prostatic fluid, epididymis fluid, seminal vesicle fluid and various secretions of urethra and vas deferens. So how to judge whether a man is healthy by semen?
The smell of normal semen is emitted by a chemical substance called arginine after oxidation, which is very similar to the smell of chestnut flower. Arginine is one of the most important components in prostate secretion. The oxidation of arginine must involve the seminal vesicle fluid. The prostate fluid obtained by rectal massage generally does not have the smell of natural ejaculation semen.
The smell of normal ejaculatory semen comes from the prostate, but only with the participation of seminal vesicle fluid. The lack of this special smell in semen often indicates the damage of prostate function, and the semen of many prostate patients often cannot smell this smell.
As for the physiological significance of the special smell of semen, it is speculated that it may be related to sexual desire and sexual behavior. In lower animals, the information of sexual activity and sexual selection of both sexes mainly depends on smell; Many mammals emit a special smell during estrus to attract the opposite sex.
Although the way of receiving sexual stimulation has been expanding in human evolution, the role of smell in sexual selection has given way to vision. However, in recent years, scientists have found many secretory substances that can affect the opposite sex from the sense of smell, indicating that the sense of smell may still be one of the important sensory organs of the human body, and it is necessary to make in-depth research.