Real science and proven lore is the backbone of thisbeautifully-designed reference for medicinal herbs and plants that work onyour thoughts and feelings. The authors, a pair of PhDs, bring their clinical knowledge to bear on plants that can calm, energize, uplift, ease pain, improve cognition, promote sleep, and alter your consciousness. They explain how to identify and use each plant, what sort of precautions to take, and the brain science of why they work. A solid and safe guide for anyone who is just getting interested in herbal medicine, or people who have been tooling around with it for years and want to know why it's effective.