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Effects of sleep deprivation

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How to test for sleep apnea: At home or in a lab

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Extreme heat endangers older adults: What to know and do

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What is a PSA test and how is it used?

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Gratitude enhances health, brings happiness — and may even lengthen lives
Harvard Health Experts and Contributors
List of Experts

Suzanne Bertisch, MD, MPH
Contributor

Joseph R. Betancourt, MD, MPH
Contributor

Irun Bhan, MD
Contributor

Ami Bhatt, MD, FACC
Contributor

Deepak L. Bhatt, M.D., M.P.H
Former Editor in Chief, Harvard Heart Letter

Michael Bierer, MD
Contributor

Kelly Bilodeau
Former Executive Editor, Harvard Women's Health Watch

Randie Black-Schaffer, MD
Contributor

Rachel A. Blake, MD
Contributor

Sara N. Bleich, PhD
Contributor

Susan D. Block, MD
Contributor

Kimberly Blumenthal, MD, MSc
Contributor

Kathryn D. Boger, PhD, ABPP
Contributor

Emeric Bojarski, MD
Contributor

Elizabeth Boskey, PhD
Contributor

Athos Bousvaros, MD
Contributor

Shafik Boyaji, MD
Contributor

David Boyce, MD
Contributor

Ellen Braaten, PhD
Contributor

Annie Brewster, MD
Contributor

Ryan Brewster, MD
Guest Contributor

Melissa Brodrick, MEd
Contributor

Kemar Brown, MD
Contributor

Lou Ann Bruno-Murtha, DO
Contributor

Glen Buchberger, MD
Contributor

How is PSA used to monitor prostate cancer?

Effects of sleep deprivation

Progressive relaxation techniques for insomnia

How to test for sleep apnea: At home or in a lab

How sleep deprivation can harm your health

Extreme heat endangers older adults: What to know and do

Want to cool down? 14 ideas to try

What is a PSA test and how is it used?

Blood sugar–friendly fruits if you have diabetes

Gratitude enhances health, brings happiness — and may even lengthen lives