Obesity could be a cause of cancer increase among under 50s

Being overweight or obese could be the cause of rising cancer rates among younger adults in England, according to a new study published today in BMJ Oncology journal.

While it doesn't explain the whole story and more evidence is needed, scientists say they believe being overweight or obese may play a role, possibly due to increased levels of insulin and inflammation.

Researchers at the Institute of Cancer Research (ICR), London, and Imperial College London, found that rates of several cancers, including bowel cancer, have been increasing in younger adults over the past two decades.

Professor Montserrat García‑Closas from the ICR, said data suggested around 15% of bowel cancer in younger people could be down to being overweight or obese.

Genevieve Edwards, Chief Executive at Bowel Cancer UK, says: “It’s important to understand that bowel cancer is a complex disease and no single factor explains why someone develops it. While this study suggests that obesity may play a role in rising rates among younger adults, many people diagnosed with bowel cancer have no obvious risk factors.

“More research is needed to better understand why bowel cancer rates are increasing in younger people and how different factors may be contributing.

“Whatever your age, it’s important that you contact your GP and ask for an at-home test if you spot any symptoms such as bleeding from your bottom, blood in your poo, or a change in your pooing habits.”

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