“[Dr. Patrick] Hwu, a tumor immunologist, has been following the ketogenic diet himself for six years, long before it was trending on social media. As a leading cancer doctor, he has many patients asking him for the ideal diet while they go through treatment and he often suggests keto. … [Hwu notes] that keto makes sense because his patients are not hungry on it, it manages their weight and blood sugar levels and keeps insulin and IGF-1 levels low — two proteins that have been shown to drive some cancers.”