The Hidden Link Between Infections and Cancer
When discussing cancer, lifestyle factors such as smoking, alcohol consumption, poor diet, and lack of exercise usually come to mind. However, a groundbreaking global study published in 'The Lancet Oncology' has shed light on another major contributing factor: chronic infections. According to the research, approximately one in every eight cancer cases diagnosed in 2024 was linked to specific infectious agents.
Conducted by scientists at the International Agency for Research on Cancer (IARC), the study analyzed global cancer data to understand how long-term infections drive malignant cell growth. While an infection does not automatically guarantee cancer, chronic presence in the body significantly elevates the risk over time.
H. Pylori Bacteria and Stomach Cancer Risk
Among the five infections identified, H. pylori bacteria accounted for the highest number of associated cancer cases, linking to roughly 7.6 million cases in 2024. This bacterium infects the inner lining of the stomach, often without showing clear symptoms initially. If left untreated for years, it can cause severe ulcers and eventually lead to gastric cancer.
HPV and Cervical Cancer Prevention
Human Papillomavirus (HPV) ranked second, associated with approximately 7.5 million cancer cases in 2024. Most notably linked to cervical cancer, HPV can also trigger other malignancies. Fortunately, effective vaccines are available, making immunization a critical tool in cancer prevention.
Hepatitis B, C, and Liver Damage
Hepatitis B (HBV) and Hepatitis C (HCV) viruses were found to be major drivers of liver cancer. Chronic infections from these viruses cause progressive liver damage, eventually leading to severe complications like cirrhosis and hepatocellular carcinoma. Regular screening and timely medical intervention remain essential to mitigating these health risks.
