[jokethrowaway]

Not yet! Keto is correlated with slowed growth of tumors.

A high carb, low fat diet may very well be what's fueling cancer.

[stubish]

some cancer. We already know different cancers use different 'fuel'. A keto diet would likely speed growth of cancers that can use or prefer ketones for instance. But for ones that only absorb glucose, the rats in the article indicate a maybe.