A New Weapon in the Cancer Fight? (Hint: It’s NOT a Drug!)

For those who have faced cancer, the journey is often one of the most challenging and emotionally draining experiences.

The endless rounds of treatments, the uncertainty, the toll on the body and mind—it’s a battle no one should have to face.

But what if there was a way to boost your body’s natural ability to fight cancer, to give you an edge in this most difficult of fights?

New research from Memorial Sloan Kettering Cancer Center (MSK) suggests that the answer may lie in a surprising place.

The study, published in the journal Immunity, focuses on a particular type of immune cell called natural killer (NK) cells. These cells are like the special forces of your immune system, capable of taking out cancer cells and virus-infected cells without needing prior exposure.

The more NK cells you have in a tumor, the better your chances of beating the disease.

But there’s a problem: the environment inside and around tumors is incredibly harsh. It’s like a battlefield where resources are scarce, and many immune cells struggle to survive.

This is where fasting comes in.

The researchers found that periods of fasting actually “reprogrammed” these NK cells, making them better equipped to survive in the dangerous tumor environment and more effective at fighting cancer.

In the study, which was conducted on mice, the animals were denied food for 24 hours twice a week, with normal eating in between.

This intermittent fasting approach had some remarkable effects on the NK cells. First, it caused the mice’s glucose levels to drop and their levels of free fatty acids to rise. The NK cells learned to use these fatty acids as fuel instead of glucose, which is typically their primary energy source.

This metabolic switch optimized their anti-cancer response, as the tumor microenvironment contains a high concentration of lipids.

Fasting also caused the NK cells to move around the body in interesting ways. Many traveled to the bone marrow, where they were exposed to high levels of a protein called Interleukin-12.

This exposure primed the NK cells to produce more of another protein called Interferon-gamma, which plays a crucial role in fighting tumors. Meanwhile, NK cells in the spleen were undergoing their own transformation, becoming even better at using lipids as fuel.

The result? NK cells were pre-primed to produce more cancer-fighting substances and were better equipped to survive in the harsh tumor environment.

While this research is still in the early stages and more studies are needed to understand how these findings might apply to humans, the implications are exciting.

Clinical trials are already beginning to study the safety and effectiveness of fasting in combination with existing cancer treatments.

Of course, it’s crucial to talk to your doctor before making any changes to your diet or treatment plan, especially if you’re currently undergoing cancer therapy.

But as we continue to unravel the complex relationship between nutrition, metabolism, and the immune system, studies like this one remind us that sometimes the most powerful weapons in our fight against disease can come from within our own bodies

To beating cancer,

Rachel Mace
Managing Editorial Director, e-Alert
with contributions from the research team

P.S. An immunotherapy breakthrough offers hope for advanced prostate cancer.

Source:

StudyFinds Staff. (2023). Eat less, beat cancer: Intermittent fasting supercharges ‘natural killer’ cells to fight tumors. Immunity. [Insert DOI]