Why are the newborn's testicles black?

Many new mothers, due to lack of experience and lack of understanding of the baby's physical characteristics, find that their baby's testicles are dark in color, but when they observe that other people's babies have very light color, in fact, the color of the baby's testicles is related to many factors, the first of which is the genetic skin color, the parents' dark skin color, the influence of maternal estrogen, the baby's small size, and the underdeveloped body.

1. Is it normal for a newborn boy to have black testicles?

It is normal for a newborn boy to have black testicles.

Many newborn boys have darker reproductive organs when they are born. These symptoms are usually normal. Parents don’t need to worry. They can just clean the baby’s testicles according to daily care.

2. What is the reason for the black testicles of newborn boys?

1. Genetic skin color

If the baby's parents have dark skin, then when the newborn boy is born, not only will his testicles be darker, but the skin color of other parts of his body will also be darker. This is because the testicles are dark due to genetic factors.

2. Local pigmentation

If the baby's testicles are darker than other parts of the body, it may be caused by local pigmentation. This is not a disease and parents do not need to worry.

3. Affected by maternal hormones

Before a newborn boy is born, when he is still in his mother's belly, the hormones in his body come from his mother. But after he is born, because the umbilical cord is cut, the newborn boy is stimulated by the mother's hormones during the fetal period and the accumulation of excessive body fluids during delivery, which causes the baby's testicles to turn black.

4. The weather is relatively cold

If a baby boy is born in winter, his scrotum will shrink due to the cold weather, causing the surrounding wrinkles to deepen and the color to become darker. This is the normal temperature regulating function of the scrotum, which is used to maintain a constant testicular temperature.