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One of the most common claims seen on social media about cancer is that “sugar feeds cancer,” and if a person completely stops eating sugar or carbohydrates, the tumour will starve and die. Because of this belief, many families remove rice, roti, fruits, and other carb-rich foods from a cancer patient’s diet.

At first, this idea may sound logical because cancer cells use more glucose than normal cells. However, the actual science behind it is far more complicated.

Is This True Or Not?

CK Birla Hospital Director of Surgical Oncology and Robotic Surgery, Dr. Mandeep Singh Malhotra, calls this belief a “dangerous half-truth.” According to him, one part of the science is correct, but people often draw the wrong conclusion from it.

He explains that proper nutrition during cancer treatment does not mean starving the body. Instead, the goal is to keep the body strong enough to handle treatment and maintain immunity.

What Is Sugar And Cancer Theory?

The theory linking sugar and cancer started in 1924, when German scientist Otto Warburg discovered that cancer cells use glucose much faster than normal cells. This became known as the Warburg Effect.

Even today, PET-CT scans work on the same principle because tumours absorb glucose quickly and appear brighter during scans. Research by the National Cancer Institute also states that cancer cells change the way they use energy.

What Happens If You Stop Carbohydrates Completely?

However, one important detail is often missed on social media. Not only cancer cells, but the brain, heart, muscles, blood cells, and immune system also need glucose to function properly.

If a person completely cuts out carbohydrates, the body starts making glucose on its own through a process called gluconeogenesis. During this process, the body breaks down muscles and proteins for energy. This means the cancer cells may still get energy, while the patient becomes physically weaker.

What Should Be Kept In Mind During Treatment?

Doctors do not suggest eating unlimited sugar. Refined sugar, cold drinks, candies, pastries, and highly processed foods can be harmful to overall health.

However, during treatment, the body needs a balanced diet. Experts usually recommend whole grains, pulses, vegetables, nuts, healthy fats, and protein-rich foods so the body gets steady energy and maintains strength during treatment.

[Disclaimer: The information provided in the article is intended for general informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition.]