Learn about anxiety disorders, including symptoms, types, risk factors, and potential treatments and therapies.

Do you ever feel a little sad as the days get colder and shorter? If the winter blues worsen and linger, it might be seasonal affective disorder, or SAD. Learn more about this type of clinical depression.

Keeping track of your progress is a great way to stay motivated to exercise. Use these worksheets to help stick to your exercise routine and see your progress!

Discover what tests are used to measure bone density, how to understand your results, and what they mean for your health.

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Editor: Christen Sandoval, M.S.P.H., C.H.E.S., Science Communication Branch, Office of Communications and Public Liaison, Office of the Director, National Institutes of Health.