What is the cause of protruding nipples?

Both men and women have nipples, but because of the excessive secretion of estrogen, women's nipples are much larger than men's. The reason why female friends choose to wear bras is to protect their nipples from external impacts and to avoid the occurrence of bulges. Normal male nipples do not protrude, and will only protrude when stimulated in some way. But what is the reason for a man to find that his nipples are protruding inexplicably?

What causes protruding nipples in men?

Many men find that their breasts are bulging without realizing it. So what is the reason for male breast protrusion? Cell proliferation, breast bulging and breast lumps in male puberty are normal physiological changes. The breast is mainly composed of mammary tissue, fat and connective tissue. There are special structures on the surface of mammary cells that can recognize and accept estrogen. When estrogen binds to the receptors of breast cells, the metabolism of breast cells becomes active, causing breast cells to proliferate and the breasts to develop and bulge.

The role of female hormones: After male adolescents enter puberty, the testicles secrete a small amount of estrogen while producing androgens, but of course the amount is very small. Estrogen causes breast cells in the nipple area to proliferate, leading to the formation of lumps in the breast. Breast lumps in adolescent boys are often limited to the area below the nipples and may sometimes be painful when touched. If they grow too fast, they will appear as male nipples.

It will disappear on its own. According to a survey, among male adolescents aged 13-15, 1/3-2/3 are found to have unilateral or bilateral nipple protrusion, an increase in the diameter of the areola, and pigmentation, but less than 1/5 of males have protruding nipples. Some boys do not care about subtle changes in their bodies and may not even notice these changes in their breasts. Since the increase in estrogen levels in male adolescents during puberty is only temporary, this type of male nipple protrusion usually disappears on its own after a few months to a year. So don’t worry too much.