Global cancer incidence and rising early-onset trends

Research from the International Agency for Research on Cancer (IARC) indicates that infectious agents were responsible for approximately 2.3 million new cancer cases in 2024, accounting for about 12 percent of all new global diagnoses. Major contributors include Helicobacter pylori, human papillomavirus (HPV), Hepatitis B, the Epstein-Barr virus, and Hepatitis C. The burden is disproportionately high in low- and middle-income countries, which account for roughly 77 percent of these cases.

Data from the World Cancer Research Fund and the German Cancer Research Center previously highlighted rising incidence in populations under 50, such as colorectal cancer in the United Kingdom. Recent analysis expands on this trend, showing significant increases in England, the United States, and the Netherlands.

In England, colorectal cancer cases in the younger demographic have more than doubled, while prostate cancer diagnoses have quadrupled since 2001. The United States has reported a more than twofold increase in kidney cancer among those under 50, alongside rising rates of colorectal, uterine, and pancreatic cancers. In the Netherlands, increases have been noted in cervical, liver, kidney, and colorectal cancers.

Medical professionals attribute these shifts to modern lifestyle factors, including the global obesity epidemic, sedentary behavior, and poor dietary choices. Environmental toxins, such as plastics, chemicals, and air pollution, are also cited as contributing factors. While lung cancer rates have declined in these regions due to reduced smoking, other early-onset malignancies continue to rise.