Dr. Norman E. Rosenthal's indispensable guide for readers who suffer from the "winter blues" is now more useful than ever. This authoritative book presents a wealth of new information on remedies for seasonal affective disorder (SAD), including recent advances in light box therapy, research on the effectiveness of antidepressants, and new recipes to counterbalance unhealthy winter food cravings. Dr. Rosenthal distinguishes among various degrees of the disorder, ranging from winter blues to full-blown SAD; provides a self-test that readers can use to evaluate their own seasonal mood changes; and offers helpful advice, coping tips, and resources.