Mike Adams, aka The Health Ranger, is an independent researcher with his own scientific laboratory equipment for testing heavy metals in parts per billion. He presents a lot of good information about sources of toxins and how they impair nutrition. He is not afraid of mentioning brand names in some places, but the tables in the back of the book leave me wondering. Whether a chronically moderate level of contamination will eventually be as destructive as an acute poisoning is a judgment that may be left to the consumer. A health food is supposed to be good for you, but not if it was grown on soil in China contaminated with heavy metals. There are many examples of foods and nutritional supplements that seem innocently good for you but contain hidden toxins. This book presents the plain facts and shows you how to evaluate your food sources and what you can do to avoid toxins. It is well documented, but I don't use this as a handbook. It's more like background information.