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Headaches are big business. For the drug companies, that is. Approximately 10 million Americans suffer daily headaches, and 50 million have headaches often enough to seek medical care. Approximately 23 million Americans suffer from migraines. Billions of dollars are spent each year on Aleve and Motrin

Many of us think of depression as a psychological condition. The causes of depression are sought in the person's childhood or in her personal circumstances as an adult. But within the last 10 or 20 years depression is increasingly being evaluated within a physiological context. Various disease states