What Causes Invasive Carcinoma?

Invasive breast cancer originates in the milk ducts or lobules but can grow into surrounding breast tissue. It may then spread (metastasize) to nearby lymph nodes and even to distant sites beyond the breast. Several effective treatment options are available; the specific approach depends on the cancer’s subtype, the extent of metastasis, and the locations involved. So, what causes invasive cancer? Below, we address this question.

What Causes Invasive Cancer?

Invasive cancer develops from earlier-stage cancers. The primary triggers for early-stage cancer include environmental factors, dietary habits, genetic predispositions, and viral or bacterial infections. Environmental carcinogens comprise both chemical and physical agents—among which ionizing radiation is a key physical carcinogen.

Dietary habits—particularly unhealthy ones—can increase cancer risk. For example, excessive intake of fats and proteins, coupled with insufficient consumption of fruits and vegetables, elevates the likelihood of developing malignant tumors.

Viral and bacterial infections have been increasingly studied in recent years. Certain pathogens can alter normal cellular DNA, thereby initiating tumor development. Genetic factors are also under intensive investigation, especially in cancers such as breast cancer, ovarian cancer, and colorectal cancer. Individuals with a family history of these malignancies should consider genetic counseling to assess potential hereditary gene mutations.

Additionally, regular health check-ups are recommended to support overall well-being.

We hope the above information is helpful to you.