Colon cancer rates are increasing among young adults worldwide. Data shows cases doubled from 1990 to 2019. In Europe, incidence rose sharply among people under 40.
This growth is real, not just due to better screening. Studies suggest early-onset colon cancer could double every 15 years in developed countries. Sadly, most young people are diagnosed late, after symptoms appear.
Why the Sudden Rise?
Genetics explain only a small fraction. In fact, most cases occur in people with no family history. Instead, researchers point to environmental and lifestyle factors.
Ultra-processed foods are a major concern. These include packaged snacks, sugary cereals, soft drinks, and processed meats. Today, they make up more than half of many diets in the UK and US.
A study in the British Medical Journal tracked over 46,000 men for nearly 30 years. It found those eating the most ultra-processed foods had a 29% higher colon cancer risk, regardless of weight. This suggests the danger extends beyond obesity alone.
How Processed Foods Harm the Body
Ultra-processed foods disrupt insulin, trigger inflammation, and damage gut health. Additives, emulsifiers, and artificial sweeteners may promote intestinal inflammation and even tumor growth. At the same time, these foods lack fiber and plant compounds that protect the body.
The evidence mirrors past discoveries. For example, we now accept tobacco causes lung cancer and alcohol raises cancer risk. Experts believe ultra-processed foods could soon join that list.
Colon cancer is rising in young adults, but diet changes may help. Choosing whole foods, rich in fiber and nutrients, supports long-term health. What we eat truly matters.
