When I was experimenting with the ketogenic diet I came across some information that should be more widespread because it's very useful. Cancer cells can only run on glucose (carbs). They aren't able to utilize fat for energy. This is because the mitochondria in cancer cells are damaged. Without functioning mitochondria the cancer cell's only option is to burn glucose anaerobically in the cytoplasm. Meanwhile, healthy cells have functioning mitochondria which enables them to use fat for fuel. A high-fat / low-carb diet will essentially starve cancer cells while feeding healthy cells. Good to know, huh?
Not only does glucose feed cancer cells, but it also appears to play a role in creating them. In the presence of oxygen, mitochondria in healthy cells can burn either glucose or fat. However, fat is a cleaner burning fuel. When glucose is burned it releases more reactive oxygen species (ROS) than fat. These ROS can then damage the mitochondria.
I'm not necessarily advising going full-blown keto just for this purpose. There are other considerations to take into account. The keto diet can have an adverse effect on your hormonal profile. However, it's good information to keep in the back of your head. A diet based on whole foods is naturally lower in carbs.