This well-written and extremely interesting book is a must-read for anyone suffering from insomnia, carbohydrate cravings (which often lead to obesity), depressed moods, or migraines. All of these medical problems have been linked to lack of serotonin, a chemical that the human brain makes naturally, which plays a part in the ability to feel pleasure, feel satisfied after eating, and feel well rested. Dr. Murray introduces his reader to a naturally-derived serotonin booster, 5-HTP, which has had positive effects on obese, insomniac, and depressed patients in both medical studies and in his own patients, so far without the negative side effects associated with Prozac and fen-phen.
While I agree with Amazon's assessment that the in-depth neurobiology of Dr. Murray's book can be intimidating, I see that as more of an indication of his unwillingness to patronize his readers by omitting it because it's "too hard for us." I would actually greatly distrust anyone who advised me to introduce a new substance into my body without telling me exactly what effect it was going to have on me in great detail. Try not to be intimidated by all those Latin names and medical terms - Murray really does try to explain these very complicated concepts in layman's terms.
I also greatly respect Murray's holistic approach to curing depression and obesity - he is never satisfied with merely selling us a miracle pill that can cure all of the reader's health problems without any effort on his or her part in this book. In addition to detailing the positive effects of 5-HTP as a dietary supplement, he strongly emphasizes good nutrition, proper sleep and exercise, and having a positive attitude as well, which I find reassuring, given the number of crash-diet and snake-oil peddlers out there.