46 years old, with black hair on his right arm.

The long black hair of human body is caused by excessive melanin deposition, which has nothing to do with numerology. The long black hair of human body is caused by excessive melanin deposition, which has nothing to do with numerology. Melanin is a natural pigment, which is distributed in human eyes, hair, skin, hair and other parts. Its distribution and quantity are related to genes, environment and other factors. In some cases, melanin may be excessively deposited, resulting in blackening of hair in some parts. This is usually a normal physiological phenomenon and will not affect health and fate. Therefore, a black hair on the 46-year-old right arm has nothing to do with numerology, so don't care too much. If you have other physical discomfort or health problems, it is recommended to consult a professional doctor in time.