Why do you feel that way? Is it because people can't manage to go into ketosis for 2 weeks to save their life? That is all Seyfried's protocol requires.
I have been eating less than 10 carbs/day for almost a year now and have beaten 2 cancers, 1 was a melanoma, and lost 72lbs.
I am convinced cancer is 90% metabolic and food and environmental factors are responsible for almost all cancer.
What have you got to lose? We have been "at war" with cancer since Nixon in 1971 and have made almost no progress in 53 years of being "At war" with it. The only significant drop in cancer rates have been from smoking cessation.
What Seyfried says makes complete sense. What the rest of the establishment says makes none.
If you read why medicine actually started using radiation as a treatment it will horrify you. Plus oncologists make 65% of their revenue from prescribing chemo. Chew on that for a minute.