The book is revolutionary. Dr. Fung is an authoritative voice. He‘s a nephrologist. He‘s done his research. It‘s a wonky, dry read at times. Some readers may not enjoy all the data. Does it work? Complicated answer. The keto diet is radical. Dining out is HARD. Is it worth it? It‘s probably the best dietary hope for diabetics. Dr. Fung strongly promotes intermittent fasting. The results are shockingly positive for me. I‘d say read the book.