
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

Respiratory health harms often follow flooding: Taking these steps can help

Could tea tree oil help treat acne or athlete’s foot?

Hemoglobin A1c (HbA1c): What to know if you have diabetes or prediabetes or are at risk for these conditions

What could be causing your blurry vision?

Avocado nutrition: Health benefits and easy recipes
Harvard Health Experts and Contributors
List of Experts

Margaret O'Connor, PhD, ABPP
Contributor

Michael O'Leary, MD
Contributor

Isioma D. Okolo, MBChB, MRCOG, DTMH
Contributor

Barbara Okun, PhD
Contributor

Nancy Oliveira, MS, RD, LDN, CDCES
Contributor; Editorial Advisory Board Member, Harvard Health Publishing

Rose McKeon Olson, MD, MPH
Contributor

T. Salewa Oseni, MD
Contributor

Andrew Oseran, MD, MBA
Contributor

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

Respiratory health harms often follow flooding: Taking these steps can help

Could tea tree oil help treat acne or athlete’s foot?

Hemoglobin A1c (HbA1c): What to know if you have diabetes or prediabetes or are at risk for these conditions

What could be causing your blurry vision?

Avocado nutrition: Health benefits and easy recipes