Are we facing a hidden cancer epidemic? Why cancer diagnoses are rising

The growing number of people receiving cancer diagnoses can make it feel as though an unseen epidemic is spreading. But the article presents a more hopeful medical explanation: people are living longer, and medicine is finding more cases than it could detect in the past.

Internal medicine specialist Dr Burak Can says cancer is fundamentally linked to cellular ageing and errors during DNA copying. As cells divide more often, the statistical chance of a copying error that develops into cancer also rises. Longer lives therefore expose people to a process that earlier generations often did not live long enough to experience.

The article also points to major advances in diagnosis. Modern MRI scans, computed tomography and sensitive blood tests can identify very small lesions at an early stage. Low-dose lung CT scans, colonoscopies and mammograms are detecting symptom-free cases before they develop into larger masses. Conditions that once carried different names, or were not classified as cancer, are also now being monitored within that category.

That broader definition and improved detection make case numbers appear higher. The article says new diagnoses among people under 50 have increased over the past 10 to 15 years because of lifestyle changes and environmental factors. Yet it stresses that the more encouraging trend lies in mortality: deaths from cancer have fallen steadily year after year.

Screening programmes and early diagnosis are described as two of the most important tools in that change. Cancer is harder to hide when imaging, screening and molecular diagnostic technologies can identify it earlier.