In short, and taken from www.ruled.me because it was the first result on Google and I needed some content on this page;
A keto diet is well known for being a low carb diet, where the body produces ketones in the liver to be used as energy. It’s referred to as many different names – ketogenic diet, low carb diet, low carb high fat (LCHF), etc. When you eat something high in carbs, your body will produce glucose and insulin.
However, a Ketogenic Diet for Cancer treatment is a bit different, in that it is much higher in fat, and even lower in carbs than a standard keto diet. I plan to go into much more depth on this, and share my research and findings, as well.