An analysis has identified 11 cancers that are increasing among younger adults, aged 20 to 49, all of which are linked to
known behavioural risk factors.
All of the 11 cancers identified, other than oral cancer, are known to be linked to excess weight.
The rise in cases mirrors cancer trends in people over 50, for whom the disease burden remains far higher, the authors
highlight. However, bowel cancer and ovarian cancer increased only in younger people.
The analysis also revealed that, while identified as a key factor, increases in body mass index alone are not enough to explain the rise in cancer, suggesting additional, suspected or unknown causes.
The researchers examined incidence trends across 22 cancer types in women and 21 in men, using national cancer registry data
in England between 2001 and 2019. They said long-term studies were urgently needed to understand the increase in early-onset cancers.
Professor Kristian Helin, CEO of The Institute of Cancer Research, said: ‘To protect future generations, we must invest
in understanding the causes of cancer at all ages, and ensure that early diagnosis, screening and prevention strategies keep pace
with a changing population.’
There should also be immediate action. Lead author Professor Montserrat García-Closas said: ‘Tackling obesity across all ages, particularly in children and young people, through stronger public health policies and wider access to effective interventions
could slow the rise in cancer and prevent many cancers – and must become a national priority.’
Study BMJ Oncology
Image | ISTOCK
