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NHS surgeon reveals 4 simple daily foods that can reduce the risk of colon cancer: ‘Just 10 extra grams of fibre a day…’

Colon cancer rates have been rising steadily and including these nutrients, recommended by NHS surgeon Dr. Karan Rajan, can lower risks by protecting your gut.

Updated on: Sept 10, 2025 11:14 am IST
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Colon cancer rates have been steadily rising worldwide, as per American Cancer Society, raising concerns about lifestyle and dietary habits that may be fueling the trend. While the risk factors are many, experts point out that prevention can often begin on your plate. Simple, nutrient-rich foods can play a powerful role in protecting the gut, reducing precancerous growths and lowering overall risk.

Consuming a bowl of yoghurt with berries every day can lower the risk of colon cancer, according to Dr. Karan Rajan.(Unsplash)

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Dr Karan Rajan, a UK-based NHS surgeon and health content creator, has shared four daily dietary components that may help reduce the risk of colon cancer. He mentions foods that are rich in probiotics, prebiotics, calcium, fibres, and polyphenols, that protect the colon against precancerous polyp formations and DNA damage. He suggests that incorporating them into your daily diet may significantly lower the risk of developing colon cancer.

According to Dr. Rajan, berries are his favourite source of prebiotic fibres, since they can be easily paired with probiotic-rich yoghurt, creating a “natural symbiotic effect.” Prebiotics are a subset of fibres that act as food for beneficial gut bacteria, encouraging their growth - but not all fibres are prebiotic in nature. The surgeon breaks down the link between prebiotics and colon cancer prevention - “Prebiotics are linked with a lower risk of colon cancer because when they feed your gut microbes, they create protective metabolites in your colon.”

Also Read | NHS surgeon shares what coffee variation you should drink after a meal for better digestion: Espresso or cappuccino

Fibre

The surgeon points out that research suggests increasing your daily fibre intake significantly decreases the risk of colon cancer. According to him, a majority of people barely hit their daily fibre target and he recommends eating beans for breakfast. This is especially beneficial for people who consume a lot of processed red meats. Dr. Rajan explains, “Just 10 extra grams of fibre a day - that's half an avocado and a cup of mixed berries - lowers your colon cancer risk by 10%.”

Black coffee

The surgeon notes that black coffee - caffeinated or decaf - is a rich source of polyphenols and prebiotic fibres which “have a protective effect on the cells of the colon against DNA damage.” Dr. Rajan explains, “Studies show, compared to non-drinkers, high coffee intake was associated with a 15 to 21% lower risk of colon cancer.”

Note to readers: This article is for informational purposes only and not a substitute for professional medical advice. It is based on user-generated content from social media. HT.com has not independently verified the claims and does not endorse them.

 
ABOUT THE AUTHOR
Eshana Saha

Eshana Saha is a fresh face in lifestyle and cultural journalism, bringing a refined, multidisciplinary perspective to the intersection of entertainment, fashion and holistic wellbeing. With less than a year of professional experience, she has quickly adapted to high-pressure editorial environments and currently works full-time with HT Media. Prior to this, she interned for nearly six months with Hindustan Times’ entertainment and lifestyle vertical, where she gained hands-on experience in digital reporting, trend analysis and editorial storytelling. Based in New Delhi, Eshana specialises in comprehensive coverage of major cultural moments — from international film press tours to the curated aesthetics of global fashion showcases, award shows and music-centred events. She holds a Bachelor’s degree in English from St Xavier’s University, Kolkata, and a Master’s degree in English from the University of Delhi, equipping her with a strong academic foundation and a keen ability to deconstruct complex cultural trends into clear, high-impact narratives. Beyond the red carpet, Eshana has developed a growing focus on health and wellbeing reporting. She bridges the gap between celebrity-driven trends and practical, evidence-informed lifestyle advice, ensuring her work remains both aspirational and grounded in editorial rigour. She has extensively covered the health implications of Delhi’s air pollution crisis, while also playing a key role in amplifying expert-led insights on women’s health and mental wellbeing, helping translate complex medical perspectives into informed, impactful public awareness. An artist at heart, she explores multiple creative forms — from visual arts and music to culinary experiments — and brings a creative’s eye for nuance, texture and detail to every story. Whether analysing runway dynamics or examining emerging wellness movements, she remains committed to accuracy and the highest standards of contemporary journalistic ethics.

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