Cervical cancer is caused by abnormal cells that grow and spread uncontrollably in the cervix; the lower, narrow part of the uterus (womb) that open into the vagina (birth canal).
Most cervical cancer is caused by the Human Papilloma Virus, or HPV; a group of very common viruses that can spread easily by skin to skin contact. HPV will affect an estimated four out of five sexually active people in their lifetimes
Only certain types of HPV can lead to cervical cancer, while others may cause genital warts. The body often fights off the virus, even the high risk types, on its own. While most women will have HPV at some point, not all will develop cervical cancer.