Bowel cancer ranks as the fourth most common form of the disease across the UK, with close to 44,000 people receiving a diagnosis each year.
It predominantly affects those over 50, with more than nine in ten cases found in this age group. But doctors are becoming increasingly worried as more and more young people are diagnosed with the condition.
Catching it early through screening can identify and remove precancerous growths before they turn into something more serious.
Doctor David Clarke, President of the Association for the Treatment of Neuroplastic Symptoms and Board-Certified in Internal Medicine and Gastroenterology, told GB News: "Due to the trend of colon cancer rates increasing in young adults, major health organisations now recommend that average risk adults begin regular colorectal cancer screening at age 45, rather than 50."
A fibre-rich diet offers invaluable protection against bowel cancer
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This represents a significant change from previous guidance suggesting screening should begin at 50.
The updated recommendation reflects growing evidence that colorectal cancer is no longer just a disease affecting older generations.
Getting checked earlier could prove crucial in catching potential problems before they develop.
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Why is gut health so important in cancer prevention?
The colon, or large intestine, plays a vital role in keeping our bodies functioning properly.
It's responsible for absorbing water and electrolytes from partially digested food, while also storing waste and creating a hospitable environment for beneficial bacteria.
These helpful bacteria actually produce essential vitamins, including vitamin K and certain B vitamins.
When the colon isn't working as it should, the consequences can range from uncomfortable constipation to more serious conditions.
Dr Clarke explained that poor colon function raises the risk of diverticulosis – essentially weak spots that can become infected – as well as inflammatory bowel disease and cancer.
One of the simplest changes you can make to protect your gut is eating more fibre, according to Dr Clarke.
"A diet rich in fibre is foundational for colon health," he declared, explaining that fibre-rich foods help keep things moving through the colon while feeding those beneficial bacteria, which then produce anti-inflammatory compounds.
Bowel cancer is the fourth most common cancer in the UK
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Top picks include whole grains such as oats, brown rice and barley, alongside legumes like beans and lentils. Fruits, vegetables, nuts and seeds – particularly chia and flaxseed – should also feature regularly on your plate.
In terms of fats, olive oil and avocados are far better choices than saturated options.
The one to avoid at all costs, according to Dr Clarke, is processed meat, which increases colorectal cancer risk by 22 per cent.
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