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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
Harvard Health Experts and Contributors
List of Experts

David J. Einstein, MD
Contributor

Todd Ellerin, MD
Contributor

Rachel Reiff Ellis
Health Writer

Lauren Elson, MD
Contributor; Editorial Advisory Board Member, Harvard Health Publishing

Lawrence Epstein, MD
Contributor

Christopher Estiverne, MD
Contributor

Huma Farid, MD
Contributor

Susan Farrell, MD
Contributing Editor

Alessio Fasano, MD
Contributor

Jeremy Samuel Faust, MD, MS
Contributor

Sara Fazio, MD, FACP
Contributing Editor

Laura C. Fine, MD
Contributor

Jennifer Fisher, MMSc, PA-C
Health Writer

Naomi D. L. Fisher, MD
Contributor

Angela Fitch, MD
Contributor


Tamara Fong, MD, PhD
Contributor

Christina Frank
Health Writer

Richard Frank, PhD
Contributor

Elizabeth Pegg Frates, MD, FACLM, DipABLM
Contributor

Gregory Fricchione, MD
Contributor; Editorial Advisory Board Member, Harvard Health Publishing

Lawrence S. Friedman, MD
Contributor; Editorial Advisory Board Member, Harvard Health Publishing

Julia Frueh, MD
Guest Contributor

Teresa Fung, MS, RD, ScD
Contributor; Editorial Advisory Board Member, Harvard Health Publishing

Robert Gabbay, MD, PhD, FACP
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