'While nine out of 10 cancers affect people over 50, the authors of another new study believe tobacco, diet and alcohol are among the causes of the increase in cancer diagnoses in people under 50 worldwide. Cancer‑linked deaths of adults in their 40s or younger grew by 27% between 1990 and 2019.'

https://www.theguardian.com/commentisfree/2023/sep/11/the-guardian-view-on-preventable-cancers-we-need-to-avoid-illness-as-well-as-cure-it