I watched a YouTube video featuring Shawn, and as he explained how he had spent the past couple of decades experimenting with supplement formulas to help heal his own energy crises, I thought this is a guy who knows his stuff, and I immediately clicked to buy this book.
It has an expansive coverage of topics. Toward the beginning, there's a focus on keto, which was useful for me, as I've just been recommended a keto diet by a nutritionist, and I've been struggling to make it work. Shawn makes it easy to see how keto compares to paleo, Mediterranean, and low-carb diets. Shawn explains some of the research behind keto, some of which was new information taken from leading studies, such as the link between keto and sirtuin. Shawn also makes a nod to new research that shows that women tend not necessarily to do so well with keto and fasting, especially first thing in the morning (which Stacy Sims writes at more length about in her books--highly recommended if you are female). The book's later chapters go into more general lifestyle well-being and I found myself switching off a bit at that point, as that information was somewhat of a re-hash of what has been presented in other sources.
What I thought was particularly useful were the Formulator's Corner sections. These feature useful supplements and contain recommended forms and doses. I rather wish that the whole book could have focused on this element, because the array of supplements out there is bewildering (and not helped by the fact that many influencers are hyping up certain supplements and citing pseudo "research"). A key problem is that we can be spending lots of money on supplements that ultimately don't work. We need experts like Shawn to provide guidance as to what works, what combinations are best, and what to look out for in a product. That said, I noticed some inconsistencies. For example, in one place, Shawn recommended a daily magnesium intake of 200-400mg, and in another place, this range was cited as 300-400mg. I also felt that the Formulator's Corner sections could have been better organized or maybe consolidated into one chapter, because there was some overlap of information and supplements. I lost track of the information in these sections.
Overall, I think Shawn's book is really valuable, but I think it could have gone a bit further in its usefulness of information, especially given Shawn's outstanding credentials and knowledge.