This is an excellent guide to how to do the low carb health fat (LCHF) way of eating. What to eat is very clearly described with lists and a helpful colour coding system for foods - a scale for eat freely, only sometimes, never. The book also talks about the other related things that keep your system working better such as sleep, gut health, stress etc. The suggested approach allows someone to move in stages towards keto, which may be a very helpful approach for many. After reading it, I gave it to my mother who is not interested in the science just wants to not what to do, with enough justification of why to feel informed. The story of why to lower carbs is very simply told - if you want a close reading of the scientific evidence that underpins this approach to healthy eating this book would not be the best option. Although at the end of each section the author has provided excellent suggestions for further more detailed/complex reading. Eating this way has improved my health. I have lost (so far) 25kg of excess weight without hunger - amazing!! Also I feel healthier and my blood results concur. The bottom line - if this was the only reference material you had on LCHF way of eating, and you followed what the book says to do, you will be following a good quality LCHF diet. There is a strong focus on organic, grass fed etc which may be out of financial reach. But if you use it as a guide for removing sugar and carbs from your diet and eating real foods, you will be so far ahead of where you are currently - it's worth a go!