Read about symptoms, causes, treatment and prevention for over 1000 diseases, illnesses, health conditions and wellness issues. MedlinePlus health topics are regularly reviewed, and links are updated daily. Top Hat was created by students for students, with the goal of helping everyone succeed in higher education.

Understanding the Context

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Key Insights

Are you a teaching assistant or co-instructor? Contact your Top Hat course instructor and request access. You will then receive an email invitation to join the course. Welcome to Top Hat! Join Session By clicking Join Session, you confirm that you have read and agree to our User Agreement Choose from thousands of textbooks and course materials in the Top Hat Catalog, and collaborate in a unique community of educators Acsh.org: Beyond “Low T”: A Clear Guide to Hormones and Mental Health in Aging Men Beyond “Low T”: A Clear Guide to Hormones and Mental Health in Aging Men Scientific American: Which Sleep Profile Are You?

Final Thoughts

The Answer Shapes Your Health A night of solid rest can feel like a panacea. The quantity and quality of our sleep influence our physical health, our moods, our cognition and our ability to function in almost every aspect of life. NBC News: Your 'sleep profile' sheds light on health, lifestyle and cognition, new study shows Your 'sleep profile' sheds light on health, lifestyle and cognition, new study shows MSN: The Best-Kept Secrets of Women Who Radiate Strength, Calm, and Effortless Beauty