What causes melanoma

Speaking of melanoma, I believe everyone is familiar with it. Melanoma is a common skin disease that we can encounter at any time in our daily lives. So what causes melanoma?

1. Air pollution: The large-scale emission of harmful substances such as Freon has destroyed the ozone layer, resulting in insufficient ultraviolet filtration. Harmful ultraviolet rays and harmful substances in the air work together to act on human skin, causing abnormal expression of melanocytes and triggering melanoma.

2. The desire for beauty is at work. In pursuit of clean and tender skin, many people use a large amount of chemical cosmetics, causing chemical skin pollution. Some people even use chemical corrosives to remove moles on the skin, but the result is counterproductive and stimulates the excessive proliferation of melanocytes.

3. Lack of health knowledge: Not paying enough attention to moles growing on the feet, perineum and other parts that are prone to friction. Due to long-term compression and friction, they eventually undergo malignant transformation.

4. Abuse of estrogen drugs. Studies have found that there are estrogen receptors in the cells of malignant melanoma. People suspect that excessive estrogen will stimulate the occurrence of melanoma.

5. Immune defects: With the improvement of living standards, the life expectancy of Chinese people has been significantly extended. With the increase of age, the human immune function gradually declines. Studies have found that low immune function is one of the important causes of melanoma, so the clinical incidence of melanoma in the elderly is very high.

6. Benign melanin plaques, also known as moles, of which junctional moles are most likely to become malignant, mixed moles are less likely, and endothelial moles rarely become malignant. However, most scalp melanomas are not transformed from moles, so some people believe that this disease is not entirely related to moles.

7. Race. The incidence rate of white people is higher than that of people of color. For example, the annual incidence rate of white people in the United States is as high as 42/100,000, while that of black people is only 0.8/100,000.