Gastroenterologist warns why colon cancer is rising in Millennials and Gen Z

Medical experts are raising concerns over a significant rise in colon cancer diagnoses among Millennials and Gen Z, pointing to low-fibre modern diets as a primary catalyst.

Dr Joseph Salhab, a Florida-based gastroenterologist, is advocating for a simple 'fibre cocktail' to combat this trend, asserting that dietary fibre is essential for colon health.

On Friday, the specialist explained that fibre nourishes beneficial gut bacteria, which produce anti-inflammatory compounds like butyrate to protect the body.

He noted: “Unfortunately, we are seeing more colon cancer in Gen Z and Millennials – and low-fibre diets may be one reason.”

Fibre and colon cancer

High-fibre foods are increasingly recognised for their role in lowering cancer risks. Dr Salhab explained: “Fibre feeds your gut bacteria, which then produce powerful anti-cancer compounds like butyrate.

"These compounds help keep your colon cells healthy, reduce inflammation, and support your body’s ability to clear waste and harmful substances more efficiently.”

Fibre cocktail to the rescue

A fibre cocktail is a blended drink packed with high-fibre ingredients designed to support digestive health. The recommended ingredients include:

• Psyllium husk: This forms a soluble gel that can help with both diarrhoea and constipation.
• Flax seeds: These contain soluble fibre plus lignans and omega-3s that can reduce inflammation.
• Chia seeds: Described as one of the most nutrient-dense options, offering protein, magnesium, and antioxidants.
• Acacia fibre: A slow-fermenting prebiotic that builds healthy gut bacteria without causing bloating.
• Hemp seeds: These add complete protein and anti-inflammatory fats to support overall gut health.

Dosage

Dr Salhab recommends starting with smaller quantities and gradually increasing the intake:

• Psyllium husk: ½ to one teaspoons
• Flaxseeds (ground): One to two tablespoons
• Chia seeds (ground): One to two tablespoons
• Acacia fibre: One tablespoon
• Hemp seeds: Two to three tablespoons

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.