Hey Colleen, sure thing. My dad's on a calorie-restricted ketogenic diet and we just started doing 16-18 hour daily fasts in addition. We're also looking to make it more natural, unprocessed, and plant-based. Its a bit of an intersection of everything that we think may help. And yeah, we've been in touch with a couple oncologists about it. One is of the opinion that a balanced diet is the only point of emphasis he'd make, but he's permissive of our decisions. The other is supportive of the idea of using this diet to target the metabolism of cancer cells. Of course none of this is rigorously proven to help, but I think in the absence of sufficient proven treatments its the best we have. It sounds like a lot but we've eased him into it and his body has grown to expect less. He's doing very well and its helped him lose some weight. Its hard to tell what's been helping him since we have him on a lot but he's still getting stable disease MRI's (7-8 months from GBM diagnosis) which makes me happy. 🙂