Why does cervical cancer occur? There are several reasons for cervical cancer: The first is infection with the human papillomavirus, also known as HPV infection, which is the fundamental cause of precancerous lesions and cervical cancer. Secondly, there are other factors; in a few cases, HPV DNA is not detected in the tumor tissue, especially among elderly patients, and it is related to early childbirth and multiple pregnancies. The third point is that cervical cancer incidence is associated with high-risk males, including those who have had penile cancer, prostate cancer, or are high-risk individuals for cervical cancer. Women who are in contact with these high-risk men are more likely to develop cervical cancer. Lastly, irregular diet and lifestyle, along with smoking and drinking, can suppress the body's immune function, potentially promoting cancer.