For decades, cancer has been considered a disease of older age. But a number of cancers are increasingly being diagnosed in people under 50. According to a new international study, the rates are rising faster among younger adults than in older age groups. The World Cancer Research Fund (WCRF) examined cancer data from England, the US and the Netherlands, identifying dramatic increases in early-onset cancer for seven cancer types in England, five in the US and four in the Netherlands. The rise is particularly alarming in some cancer types. In England, the rate of prostate cancer among men under 50 increased from about 1 case per 100,000 in 2001 to 3.6 per 100,000 in 2023. The rates of bowel, kidney and womb cancers also more than doubled among younger adults. In the US, kidney cancer among people under 50 increased from 2.5 cases per 100,000 in 2000 to 5.3 per 100,000 in 2023. Bowel, uterine, and pancreatic cancers also rose by more than 50%, while breast cancer increased by about 20%. The Netherlands also recorded significant increases in early-onset bowel, kidney, liver and cervical cancers. Why Cancer Is Increasing Among Younger People? Also read: H. pylori, HPV Among Five Infections Behind 1 In 8 Cancers Worldwide: LancetAccording to WCRF, several known cancer risk factors like including obesity, unhealthy diets, physical inactivity, alcohol consumption, smoking, and exposure to environmental pollutants, could be the drivers behind this surge. The organisation also says that around 40% of cancers are linked to modifiable risk factors. Obesity is a major red flag as excess body fat can lead to chronic inflammation, altered hormone levels, and harmful metabolic changes that could promote cancer development over time. However, experts also say that obesity alone cannot explain the whole picture. Other possibilities include changes in gut bacteria, exposure to certain toxic chemicals and pollutants, antibiotic use, and other factors. These areas still remain under investigation. The findings do not mean that cancer has suddenly become common among young adults. Age remains the biggest overall risk factor for cancer, and the majority of cancers still occur after 50, with the average or median age at diagnosis in developed countries generally above 60. But the changing pattern is important because cancers occurring in younger adults can be diagnosed later when symptoms are initially attributed to less serious conditions. Dr Giota Mitrou, executive director of research and policy at the WCRF said, “Behind every figure is a person facing cancer earlier than they, their family and often their doctor would expect." “While cancer is still much more common in older adults, these changing patterns among younger generations need to be treated as a serious research and cancer prevention priority,” she added.Also read: FDA Approves Targeted Cancer Drug As First-Line Treatment For CLL That Cuts Progression Risk By 80%Other Factors Contributing To The Surge Better diagnostic tools and technology could also be a reason behind the rising cases. Greater awareness of cancer symptoms and people seeking medical care earlier can increase the number of cancers detected. But researchers say these factors do not fully explain the pattern. The fact that rates are increasing for some cancers while others are falling is particularly important. For example, lung cancer rates among younger people have declined in some countries. Researchers are now trying to understand which exposures may be increasing cancer risk decades earlier than expected. In the UK, a major study involving around 250,000 adults is being launched to investigate factors contributing to rising bowel cancer rates among younger people.