Cancer Therapy & Diet: Gut Microbiome Link
- A recent study by Ludwig Cancer Research reveals a surprising connection between diet,gut microbes,and how well cancer therapy works.
- rabinowitz noted that diet might explain why cancer drugs affect patients differently.The study found that diet can indeed change cancer treatment results in models, in unexpected ways.
- Roichman, the study's lead author, pointed out that the liver enzymes involved also break down other drugs.This suggests the findings could be relevant to multiple drugs used for...
Diet profoundly impacts cancer treatment, according to groundbreaking research linking gut microbes and drug efficacy. This pivotal study reveals how plant-based foods interact with gut bacteria, influencing the body’s ability to process cancer drugs like PI3K inhibitors. Researchers discovered plant molecules transform, impacting liver enzymes and drug clearance rates, which can dramatically affect treatment outcomes. understanding how the gut microbiome shapes cancer therapy is critical.The findings, published in Cell, emphasize the need to consider diet, microbiome composition, and antibiotic use in new treatment strategies. News Directory 3 highlights the potential for personalized dietary recommendations and microbiome analyses. Discover what’s next for cancer patients.
Diet’s Surprising Role in Cancer Therapy: Gut Microbes Impact Drug Efficacy
Updated May 31,2025
A recent study by Ludwig Cancer Research reveals a surprising connection between diet,gut microbes,and how well cancer therapy works. The research,lead by Asael Roichman and Joshua Rabinowitz at Ludwig princeton,sheds light on why PI3K inhibitors,drugs designed to stop cancer cell growth,haven’t consistently controlled solid tumors.
rabinowitz noted that diet might explain why cancer drugs affect patients differently.The study found that diet can indeed change cancer treatment results in models, in unexpected ways. Plant-based foods contain small molecules that gut bacteria convert into compounds. these compounds then activate the liver, causing it to clear PI3K inhibitors faster, which reduces the drug’s effectiveness.
Roichman, the study’s lead author, pointed out that the liver enzymes involved also break down other drugs.This suggests the findings could be relevant to multiple drugs used for cancer and other diseases.
The study, published in Cell, started wiht an unexpected result from an experiment examining diet and cancer therapy from a different angle.
Previous research, including work by the rabinowitz lab, showed that ketogenic diets improve responses to cancer drugs in mouse models. These diets are high in fat and low in carbohydrates, and the betterment was thoght to be due to lower insulin and blood sugar levels.However, researchers were surprised when mice on high-carbohydrate diets also responded well to PI3K inhibitors.
Further examination revealed that the keto diet’s effect had little to do with carbohydrates, fat, blood sugar, or insulin. Instead, the key factor was whether the diet was made of whole foods or highly processed ones.
Ketogenic food for mice is highly processed and lacks the phytochemicals found in standard chow, especially from legumes and soy. gut microbes break down these phytochemicals, such as soyasaponins from soybeans, into molecules that trigger the production of cytochrome P450, a detoxifying liver enzyme.
Experiments showed that increased production of these enzymes in mice fed standard chow led to faster clearance of PI3K inhibitors, reducing their anti-cancer effect. A high-carbohydrate, low-phytochemical diet, as well as antibiotics that suppressed the gut microbiome, enhanced PI3K inhibitor activity in mice.
Roichman said that some plant-based diets, through their interactions with gut microbes, may lower cancer drug exposure by increasing the body’s drug clearance systems. While the specific molecules may differ in humans, the research highlights diet and the microbiome as key factors in how cancer drugs behave.
The findings suggest new cancer therapy strategies that consider a patient’s diet, microbiome composition, and antibiotic use. These strategies could include microbiome analyses and dietary or pharmaceutical interventions to modulate drug metabolism.
What’s next
Future research will focus on identifying specific dietary components and microbial interactions that influence drug metabolism in humans. This could lead to personalized dietary recommendations to improve the effectiveness of cancer treatments.