Does HPV Cause Cancer?
In 90% of cases the immune system eliminates the virus from the body in less than two years. Only 10% of infections persist three years or more and are likely to lead to the development of precancerous lesions.
“Therefore, we must not conflate HPV and cervical cancer of the uterus. Most infected women, including through high-risk strains, never develop the disease, “says Abby Lippman, Professor, Department of Epidemiology, McGill University, Montreal, and former president of the Canadian Network for women’s health.
In addition, he adds: “It usually takes a persistent infection 15 years before it can regenerate into cancer, leaving ample time for physicians for detecting and treating,” says Dr. Jean-Pierre Spinosa, obstetrician-gynecologist trained in gynecologic oncology in Lausanne, Switzerland, and coauthor of the book The survey bite too?
Although infection with oncogenic strain is a necessary condition to trigger cervical cancer, there are other factors that increase risk, such as smoking, early sexual debut, different sexual partners and pregnancies transmitted infections and even a diet deficient in vitamins or a weakened immune system caused by disease or medicines, etc..
“This is why this condition affects mostly women socially disadvantaged,” says Marc ZaffraGP, visiting scholar at the Centre for Research Ethics at the University of Montreal and columnist PasseportSanté.net site.
The American Cancer Society (ACS) also indicates that if cervical cancer is the second deadliest cancer among women worldwide, more than 80% of new cases occur in developing countries, which have no screening programs.
Cervical cancer in numbers:
World: 550,000 new cases / year 310,000 deaths.
Canada: 1 400 new cases / year; 400 deaths.
Quebec: 325 new cases / year 80 deaths.