Nusrat Jahan Idrees, PhD researcher in the field of oncology
For Muslims around the world, fasting during Ramadan is an act of devotion, self-discipline and spiritual purification. But beyond its religious significance, fasting has long been associated with numerous health benefits, from detoxification and improved gut health to metabolic regulation and enhanced immunity.
Now, emerging research is uncovering yet another profound advantage – fasting’s potential role in cancer prevention and treatment.
Studies show that fasting can strengthen the body’s natural defences, enhance the effectiveness of cancer therapies and reduce disease risk. As science delves deeper into the mechanisms of fasting, it is reaffirming what Islamic teachings have long emphasised – moderation, self-restraint and mindful eating are essential for overall well-being.
Can fasting enhance chemotherapy?
A recent study published in Nature Cancer (2024) suggests that fasting-mimicking diets (FMDs) can protect healthy cells from the harsh effects of chemotherapy while making cancer cells more susceptible to treatment. The study found that cancer patients who followed an FMD before chemotherapy reported fewer side effects, including nausea and fatigue, compared to those who did not fast. (Nature Cancer, 2024)
Fasting and immunotherapy: Boosting the body’s natural defences
Another ground-breaking study found that fasting enhances the activity of natural killer (NK) cells, which play a crucial role in the immune system’s fight against cancer. By shifting metabolism, fasting makes these NK cells more effective at identifying and eliminating tumours (Immunity, 2024)
The Ramadan effect: Does Islamic fasting reduce cancer risk?
A 2024 study published in The Lancet Diabetes & Endocrinology suggests that prolonged intermittent fasting, such as during Ramadan, reduces metabolic disorders linked to cancer. The study tracked fasting participants over a decade and found lower rates of obesity, insulin resistance, and diabetes – conditions that significantly increase cancer risk. (The Lancet Diabetes & Endocrinology, 2024)
This aligns with Islamic principles of fasting not just as an act of worship, but also as a means of maintaining good health. It reinforces the hadith: “Fast and you shall be healthy.” (Al-Tabarani, al-Mu’jam al-Awsat, Hadith 8312)
How fasting affects tumour microenvironments
A 2024 study explored how fasting alters the tumour microenvironment, making it less favourable for cancer growth. Researchers found that breast cancer patients who followed fasting protocols had better responses to Sorafenib, a cancer drug, due to increased oxidative stress on cancer cells (Cell Oncology, 2024)
This further supports the idea that fasting works as an adjunct therapy rather than a standalone cure. In the Islamic tradition, fasting is seen as a means of purification, physically and spiritually, which may extend to the body’s ability to fight disease.
Bridging faith and science
It’s fascinating how an ancient religious practice aligns with modern medical advancements. While fasting remains a deeply spiritual experience, its scientifically supported health benefits make it even more remarkable. Whether for faith, longevity or cancer prevention, fasting is a timeless remedy for both the body and the soul.
As science continues to explore fasting’s full potential, one thing is clear: the wisdom of fasting, as taught in Islam, was ahead of its time. The next time you fast, know that you’re not just cleansing your soul – you’re empowering your body against disease.