Rising cancer rates in younger populations linked to accelerated biological aging

Recent data indicates a concerning rise in cancer rates among younger populations. According to the ‘Colorectal Cancer Statistics 2026’ report, while overall colorectal cancer rates have declined due to lower incidence in adults over 65, cases among those under 65 are increasing, with the most significant rise seen in the 20-to-49 age group. Experts note an increase in tumors in the distal colon and rectum, which are often more difficult to treat.

A study published in Nature Medicine suggests that accelerated biological aging may explain why cancer diagnoses in people under 50 rose by 24 percent globally between 1990 and 2019. Researchers from the Washington University School of Medicine analyzed data from the UK Biobank and the US ‘All of Us Research Program,’ finding that younger generations exhibit a higher gap between their chronological and biological ages compared to previous generations.

While the exact causes are still being investigated, researchers point to a combination of environmental and lifestyle factors. These include obesity, sedentary lifestyles, smoking, excessive alcohol consumption, high stress, and the consumption of ultra-processed foods and red or processed meats.