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NHS surgeon reveals this secret ingredient reduces colon cancer risk by 17% and it is not fibre: How to get it

NHS surgeon Dr Rajan highlights calcium's protective benefits for the colon, suggesting whole food sources reduce cancer risk by 17 percent. 

Published on: Nov 11, 2025 01:24 pm IST
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The World Health Organisation (WHO) states that globally, colon or colorectal cancer was the third most common type of cancer in 2022, with over 1.9 million cases diagnosed. It is expected to reach 3.2 million new cases annually by 2040.

Just 300 milligrams of dietary calcium was associated with a 17 percent lower risk of colon cancer. (Freepik)

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Therefore, it is a need of the hour that you incorporate colon-healthy practices into your daily lifestyle. While consuming dietary fibre is one of these steps, there is another essential nutrient, other than fibre, that is known to protect our colon, as shared by Dr Karan Rajan in an Instagram post on November 11.

Your secret colon guardian

Dr Rajan, an NHS surgeon and health educator, says the nutrient is calcium. He talked about the importance of including calcium in your diet to safeguard your colon and said, “You can lower your risk of colon cancer by 17 percent by ensuring you get enough of this one nutrient, and it's not fibre.”

Dr Rajan noted that, “These statistics held true even after accounting for age, weight, smoking, exercise, and genetics.” He also noted that the good news is that calcium from both dairy and plant-based sources had similar protective effects against colon cancer.

How can you add calcium to your diet to protect your colon?

According to the NHS surgeon, three hundred milligrams of calcium is just 30 percent of your daily value. Moreover, you can get this from:

  • 1 cup of milk
  • Six ounces of plain yoghurt
  • A cup of cooked collard greens
  • Even 2 tablespoons of chia seeds provide almost 200 milligrams of calcium

Calcium is your colon's secret guardian. (Google Gemini)

Beyond the bone protective effects of calcium, Dr Rajan noted that it appears to keep the colon healthy by binding to bile acids and forming a harmless soap. This substance can actually ‘prevent further damage to the gut lining as well as reduce colon permeability,’ which refers to the gaps between the cells of the colon.

Lastly, Dr Rajan encouraged getting daily calcium content from whole food sources, as calcium from supplements was associated with only a 9 percent reduced risk of colon cancer. “If you pair calcium sources with fibre-rich plants, you achieve a double whammy of colon cancer risk reduction,” he added in the end.

Note to readers: This article is for informational purposes only and not a substitute for professional medical advice. Always seek the advice of your doctor with any questions about a medical condition.

This report 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
Krishna Pallavi Priya

Krishna Priya Pallavi is a journalist with over 9 years of experience, covering health, fashion, pop culture, travel, wellness, entertainment, festivals, mental health, art, decor, fitness, and sex and relationships. She is an alumna of the Indian Institute of Mass Communication (IIMC), Dhenkanal, and holds an undergraduate degree in Journalism and Mass Communication from Guru Gobind Singh Indraprastha University, Delhi. Her strong academic foundation informs her analytical and detail-oriented approach to storytelling, helping her uncover stories where none seem to exist. Before joining Hindustan Times, Pallavi worked with some of India’s leading media organisations. She spent close to three years at India Today, where she honed her newsroom skills and developed a sharp editorial sensibility. She also worked for over a year and a half at Vagabomb, ScoopWhoop’s feminist digital platform, where she explored stories through a gender-sensitive, socially aware lens. Pallavi has a deep interest in global fashion trends and international fashion seasons, and enjoys interviewing celebrities and tracking pop culture movements—interests that frequently translate into engaging, reader-friendly stories. Alongside lifestyle and entertainment, she has a keen eye for impactful health and wellness journalism, regularly interacting with doctors, designers, and digital content creators to bring nuance and credibility to her work. Born and raised in Haryana, Pallavi remains deeply connected to her ancestral roots in Odisha. Her ability to spot fresh angles brings curiosity and depth to stories she pursues. When not chasing deadlines, she enjoys spending time with her dog, planning her next vacation, reading, running new trails, and discovering new destinations.

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