The younger the age of menarche, the greater the probability of breast cancer

Breast cancer is one of the most common malignant tumors that seriously affects women's physical and mental health and even threatens their lives. Male breast cancer is rare. Heredity is one of the causes of breast cancer. So, what are the other causes of breast cancer ? The following is an introduction to the causes of breast cancer.

The main known causes of breast cancer are:

1. Age of first pregnancy: The risk gradually increases with the delay of the age of first birth. The risk of first birth after the age of 35 is higher than that of those with no childbearing history. This is one of the causes of breast cancer.

2. The age of menarche is one of the causes of breast cancer: those who have their menarche before the age of 13 have a 2.2 times higher risk of developing the disease than those who are older than 17.

3. Age: In women, the incidence of breast cancer increases with age. It is rare before menarche and before the age of 20, but it rises rapidly after the age of 20. It is higher at the age of 45 to 50, but it is relatively flat. The incidence continues to rise after menopause and reaches its peak at around the age of 70. The mortality rate also increases with age. After the age of 25, the mortality rate gradually increases and keeps the upward trend until the elderly.

4. Genetic factors: Women in the family with a history of breast cancer in the first-degree direct family have a 2 to 3 times higher risk of developing breast cancer than the normal population.

6. Estrogen supplementation after menopause: Long-term use of estrogen during menopause may increase the risk of breast cancer.

7. Food is also one of the causes of breast cancer: especially fatty diet, which can increase the risk of breast cancer.

8. Weight gain may be an important cause of breast cancer after menopause.

The above is a brief introduction to the causes of breast cancer. I believe that the causes of breast cancer can help you. The above content is for your reference only. If you have any questions about the causes of breast cancer, please consult our online experts, who will answer them in detail.

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