What Are The Causes Of Breast Cancer

Cancer is the second leading cause of deaths in women today. It is one of the most commonly occurring cancers in women. The incidence of the disease is largely dependent on age and genetic factors. The treatment prognosis is good if the cancer is detected at an early stage and has not spread to other parts of the body.

The average woman has a 1:8 chance of developing it.Cancer occurs when there is an abnormal and unprecedented growth in the cells of the breast tissue. This also happens when there are some abnormal genetic mutations which increase one’s risk of developing cancer. Besides the genetic factors, there are also some risk factors that increase your chances of developing the disease.

Causes And Risk Factors Of Breast Cancer


Breast cancer is 100 times more common in women than in men. Being a woman simply puts you at more risk of developing the cancer.

Your Age

The older you are, the higher your risk of developing the cancer. Although younger women too are known to get breast cancer, women above the age of 55 have the highest risk.


Inherited abnormal mutations lead to a family history of breast cancer. If your mother had it, there are chances of you developing it too. These abnormal mutations are found in BRCA1 AND BRCA2 genes. Women with these genetic mutations have a higher chance of developing the cancer.


If a woman has already had breast cancer in one breast, the chances of a relapse are higher. She is also more likely to develop it in her other breast.

Racial Incidence

A recent research has concluded that white women have a higher chance of developing the disease as compared to African-American women. Asian women are slightly better off and the chances of them developing the disease are slightly lower.

Benign Lumps

A lot of women are diagnosed with benign lumps which later prove to be cancerous or become cancerous. Women who have suffered from lobular carcinoma have a higher chance of developing the cancer.

Hormonal Exposure

Early puberty and delayed menopause seem to be one of the reasons for a higher incidence of breast cancer in women. Girls who start their periods very early i.e before the age of 12 and women who experience menopause after the age of 50 are more likely to get breast cancer. This is because of a higher incidence of hormones like oestrogen and progesterone circulating in their body.


Women who have had their first child after the age of 30, have a higher risk of developing the cancer. Similarly women who have had more children especially in their child bearing years are less likely to get the disease. This is again because of reduced menstrual cycles.

Also Read

Causes Of Breast Cancer
6 Possible Causes Of Breast Cancer
Understanding The Breast Cancer Symptoms
Different Types Of Breast Cancer

Birth Control

Birth control pills increase a woman’s chances of developing breast cancer. Alternately, the risk reduces once the pills have been stopped.


Hormonal replacement therapy for curing the side effects of menopause also leads to a higher incidence of breast cancer.Lack of exercise, being obese and alcohol addiction increases the woman’s chances of developing the disease. Lifestyle has become one of the main reasons for development of cancer. Women who breast feed their children have a lesser chance of developing the disease.

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