The information in the book is good, though it does kind of drag and if you are listening to the audiobook it can get confusing because you have to keep jumping back and forth to reference information. So, here's my issues: I bought the audiobook and he tells you to go to the blood sugar solution website for more info/references/health quizzes/etc. Thing is, that web page no longer exists. When you enter it in, it takes you to his newest site where he's promoting certain supplements, products, and his newest books. In the blood sugar solution he practically brags about all the hard work he put in to touring supplement production factories and researching the supplements sold by top companies to verify the good ones from the bad ones. thing is, you can't access that info now. But hey, you can buy supplements on his site. If you can afford them that is, and if you happen to find the ones you want/need in stock. Which, BTW, just checked and the blood sugar solution kits are sold out or "on back order until at least August of 2020"... so I get the feeling the blood sugar solution kits aren't coming back. I recommend checking this book out from your local library instead of purchasing it. Like I said, lots of good information. He's absolutely preachy, appears to be only in this for profit now, but does provide good health advice, you know, for the most part.