This wasn't as good as I wanted it to be, but it was an interesting look at how caffeine affects our bodies, our minds, and our culture. There were parts to the book that made me feel that the author was desperately looking for a bogeyman. Other parts seem to glorify the drug. There was no narrative or overarching thesis; just a barrage of scientific studies and pleading with the government to regulate the use of caffeine in dietary supplements and the food and beverage industry. I think it is a decent book for consumers to understand what they are purchasing and how it will affect their health, but it is pretty dry writing and narrative less. 3.5 stars.