The standard length of a man's penis is not less than 5 centimeters in a flaccid state and not less than 8 centimeters in an erect state. If the penis is less than 5 centimeters in a flaccid state and less than 8 centimeters in an erect state, it indicates a small penis. The penis usually matures around 18 years old, and the length of the penis will basically be fixed. If the penis is relatively small, its length can be increased through surgery.
1. The size and shape of the penis are controlled and influenced by genetic factors. If an adult male is tall, his external genitalia, including the penis and scrotum, usually develop better, and the penis may be larger. Conversely, it may be smaller. However, it is worth noting that the size of the penis is not directly proportional to height.
2. If a man has insufficient hormone levels, endocrine disorders, or penile retraction caused by scrotal swelling, these may affect the length of the penis, leading to a small penis. The size of the penis is also influenced by race and region.
3. The penis has two main functions: urination and sexual intercourse. Generally, the length of the penis does not affect urination. If the penis can normally erect and the internal genital organs such as the testicles function normally, with a length greater than 5 centimeters in a flaccid state, sexual life will usually not be affected. If there are discrepancies between the length of the penis and the standard value, it is recommended to consult a doctor promptly to find out the cause.