In the last five years, herbal remedies have led the charge of natural products into the health care market - despite conflicting reports on their effectiveness and safety. But now consumers are stepping back and asking the tough questions: Do these herbs actually work? Does "natural" mean "safe"? What about side effects?" "From leading researchers and Duke University psychiatrists, this book translates hard data into the accessible answers you need to make informed decisions on taking St. John's wort for depression, kava for stress or anxiety, valerian for insomnia, or ginkgo for memory loss."--Back cover.