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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
Harvard Health Experts and Contributors
List of Experts

Susan Abookire, BSEE, MD, MPH, FACP
Contributor

Steven A. Adelman, MD
Contributor

Marwa A. Ahmed, MD, MS
Contributor

Jessica Allegretti, MD, MPH
Contributor

Joseph Allen, DSc, MPH, CIH
Contributor

Daniel Amponsah, MD
Guest Contributor

Christopher D. Anderson, MD, MSc
Contributor

Sue-Ellen Anderson-Haynes, MS, RDN, CDCES, LDN, NASM-CPT
Contributor

Chika Anekwe, MD, MPH
Contributor; Editorial Advisory Board Member, Harvard Health Publishing

Adjoa Anyane-Yeboa, MD, MPH
Contributor

Wynne Armand, MD
Contributor

Sait Ashina, MD
Contributor

Steven J. Atlas, MD, MPH
Contributor

Parham Azimi, PhD
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