First off, i am neither a chemist nor a nutritionist: i actually have almost no background in either except for high school chem class-- and i only just became interested in eating healthy, let alone consciously-- and i'm finding this book is not only the most accessible chemistry book i've ever read, but is also the most clear explanation of what exactly is going on with the macrobiotic diet.
Unlike alot of the other books explaining the principles of macro and the acid-alkaline balance, this is largely a scientific explanation of exactly what are the chemical reactions *causing* the different foods we eat to have various effects on us, rather than simply instructions on how much of what to eat per day etc. For me personally, i like to go in to any program informed; and for a while i cringed at the idea of having to go heavilly into chemistry to know what the macro nutritionists are really talking about-- but i would definatelly push this as an excellent introduction: concise, elegant, comprehensive and suprisingly accessible. I might even suggest this book to someone just starting out learning chemistry of any sort; i wish i had had this book around when i was first learning the subject :) . Aihara is good at raising interest in the subject, and also at building up to it: framing the entire discussion in terms of where cells first took on all the traits they still have: in the ocean water where they evolved. It's a great way to introduce the subject and at a slender 177 pages of text, a good place to get your bearings or, if you like, just a good read.