I’m currently reading Buzz: The Science and Lore of Alcohol and Caffeine. It updates or outright debunks quite a few “facts” which I learned in school, those many years ago. It made me realize that scientific knowledge continues to be gathered and sometimes disproven, and I shouldn’t assume that theories I learned in school are still considered true. It must be both fascinating and frustrating to be a medical doctor and have to keep up with all the research and new evidence that may be against accepted practices. I’ve had a few run-ins with doctors who refuse to listen to new information I bring to them (I always do my own research). One MD told me: “That study isn’t worth the paper it’s printed on!” But I digress. Buzz is well-written, well-researched, and may significantly update your understanding of these substances. Now that I’ve learned all about why it’s not completely true that alcohol is a depressant (but that’s what they told me in school!), I’m moving onto the caffeine portion. The author, Stephen Braun, has a new book out which also looks fascinating: The Science of Happiness: Unlocking the Mysteries of Mood.