Most of what I’ve heard about keto diets involves leaving blood sugar levels dangerously low for long periods of time by forcing your body into its weird starva

Most of what I’ve heard about keto diets involves leaving blood sugar levels dangerously low for long periods of time by forcing your body into its weird starvation mode. That's a gross mis-characterization of keto diets, at least when done properly[1]. Up to 20g of net-carbs (ie: non-fiber) per day. The intention is to moderate your insulin response, which impacts other hormones and, for weight loss, switches your fat cells to be able to release fat for energy instead of storing fat. That level of carbs are more than adequate to maintain necessary blood sugar levels for your body's needs. There's no "weird starvation mode". Lowering your carb intake and moderating your insulin response causes your body to stop the "easy" burning of carbs for energy, and to switch to burning fat (from your food first, fat cells second) for energy. A big misconception about keto is that you have to eat a lot of fat; if you're trying to lose weight that's not true. You need to consume enough fat to keep your calorie intake from being too low (otherwise you do get into a starvation mode which lowers your metabolism), but low enough so that your body needs to get fat from your fat cells to make up its energy needs. All that said, I have no idea if keto helps with cancer at all. It almost certainly has no direct affect. If there's any benefit, I would guess that it's related to the hormonal and metabolic impacts of fat-burning rather than carb-burning, or the reduction of systemic inflammation that most people on extended keto diets experience. [1] https://www.reddit.com/r/keto/wiki/faq https://www.reddit.com/r/keto/wiki/faq