Why Are My Genitals Dark Even If They Have Never Been Sunburned? Medical Answers.
In the human body, the genitals are the part that has a unique skin color that is different from other parts of the skin. Many people may wonder why the genitals are darker in color even though they are not exposed to sunlight like other parts of the คาสิโนออนไลน์ UFABET ฝากถอนรวดเร็ว เริ่มต้นเล่นง่าย skin. This article will help you understand this matter by referring to medical principles.
1. Melanin
The skin color of the human body is determined by the melanin pigment, a protein made by skin cells. Melanin is responsible for protecting the skin from the sun’s UV rays. But even though some skin is not exposed to the sun, such as the genitals or underarms, cells in those areas still produce more melanin than other areas of the body. Causing these areas to appear darker.
The accumulation of melanin pigment on the genitals is a common phenomenon that is influenced by genetics and hormones. In addition, the color of the genitals can also change with age or hormonal changes in the body. Especially during reproductive years when the body starts to produce more sex hormones.
2. Sex Hormones
Changes in sex hormones in both men and women affect the color of the genitals. Estrogen in women and testosterone in men are involved in increasing the production of melanin in the reproductive areas. This is the reason why the genitals of both men and women appear darker in comparison to the rest of the skin.
In women, the color of the nipples and labia can also darken after pregnancy or the use of birth control pills, as hormones related to reproductive changes increase melanin production.
3. Friction and usage:
In addition to genetics and hormones, natural friction from the body, such as walking or wearing tight clothing, can cause the skin in that area to darken. Repetitive friction can stimulate melanin production in areas that are frequently rubbed, causing the area to darken.
Medical references
- American Academy of Dermatology (AAD) – Melanin and the Process of Human Skin Pigmentation
- Harvard Medical School – The Effects of Sex Hormones on Skin Color Changes in the Genital Area
- Mayo Clinic – The Role of Friction in Skin Color Change