![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/13887/conversions/28625bc5-0572-4259-b78b-f74ebfd57c0b-micro.jpg)
A muscle-building obsession in boys: What to know and do
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16311/conversions/gettyimages-1187993811-micro.jpg)
Calcium-rich foods: How to boost your intake of this important mineral
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16310/conversions/gettyimages-1187249966-micro.jpg)
DNR: What is a do-not-resuscitate order?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16297/conversions/gettyimages-1448461961-micro.jpg)
Sleep hygiene: Simple practices for better rest
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/12526/conversions/ed6fb414-d554-4b09-b3d8-47b47b53af16-micro.jpg)
Should you be tested for inflammation?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16266/conversions/gettyimages-1643811315-micro.jpg)
Torn meniscus: Symptoms, diagnosis, and treatment options
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15304/conversions/384b5a4a-770a-47f3-b8e5-9422e290d096-micro.jpg)
Life can be challenging: Build your own resilience plan
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16209/conversions/gettyimages-1653418139-micro.jpg)
Alcohol and your health: Risks, benefits, and controversies
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16151/conversions/gettyimages-2178501218-micro.jpg)
DHEA supplements: Are they safe? Or effective?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16144/conversions/gettyimages-1403932695-micro.jpg)
Malnutrition in older adults: Strategies for addressing this common problem
Harvard Health Experts and Contributors
List of Experts
![photo of Susan Abookire, BSEE, MD, MPH, FACP](https://domf5oio6qrcr.cloudfront.net/medialibrary/9746/Susan-Abookire-h5562.jpg)
Susan Abookire, BSEE, MD, MPH, FACP
Contributor
![photo of Steven A. Adelman, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/8888/Adelman-2.jpg)
Steven A. Adelman, MD
Contributor
![photo of Marwa A. Ahmed, MD, MS](https://domf5oio6qrcr.cloudfront.net/medialibrary/9730/Marwa-Ahmed-Skiing.jpg)
Marwa A. Ahmed, MD, MS
Contributor
![photo of Jessica Allegretti, MD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/9785/Allegretti_Jessica_MD_15_WEB.jpg)
Jessica Allegretti, MD, MPH
Contributor
![photo of Joseph Allen, DSc, MPH, CIH](https://d2icykjy7h7x7e.cloudfront.net/authors/hOy4Ntd9TuBQE16nSLDsn80rknSKaTeP4SMVCfZd.jpg)
Joseph Allen, DSc, MPH, CIH
Contributor
![photo of Daniel Amponsah, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/cOakdZDVtqIAUrt21kvcLee66knC4hL9R711usoK.jpg)
Daniel Amponsah, MD
Guest Contributor
![photo of Christopher D. Anderson, MD, MSc](https://d2icykjy7h7x7e.cloudfront.net/authors/H60gF5m1AQOrVGyYvbXHX96uXItMRxZu3r9M4W8Y.png)
Christopher D. Anderson, MD, MSc
Contributor
![photo of Sue-Ellen Anderson-Haynes, MS, RDN, CDCES, LDN, NASM-CPT](https://domf5oio6qrcr.cloudfront.net/medialibrary/10486/professional-head-shot-scaled.jpg)
Sue-Ellen Anderson-Haynes, MS, RDN, CDCES, LDN, NASM-CPT
Contributor
![photo of Chika Anekwe, MD, MPH](https://d2icykjy7h7x7e.cloudfront.net/authors/Dw0eiNbfeCuBZ553H7Jrb3t470RDFhgkoCJE1ACU.png)
Chika Anekwe, MD, MPH
Contributor; Editorial Advisory Board Member, Harvard Health Publishing
![photo of Adjoa Anyane-Yeboa, MD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/10502/Adjoa-Anyane-Yeboa-headshot2-commonwealth-fund_updated-e1620151342595.png)
Adjoa Anyane-Yeboa, MD, MPH
Contributor
![photo of Wynne Armand, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/vYWboPeVUIvkPnzcpIhr2aiLeEmHyl7PqGqRNfiq.jpg)
Wynne Armand, MD
Contributor
![photo of Sait Ashina, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/LiqTzNVlMLqsUhjAV0yj2HjSBb7hdHvBwLAnCCqn.jpg)
Sait Ashina, MD
Contributor
![photo of Steven J. Atlas, MD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/8897/SAtlas_8.15_cropped.jpg)
Steven J. Atlas, MD, MPH
Contributor
![photo of Parham Azimi, PhD](https://d2icykjy7h7x7e.cloudfront.net/authors/ZXpjkAeQYjqhMXWYBAoPR59h1OmSdUwUt74TrtL0.jpg)
Parham Azimi, PhD
Contributor
![photo of Ashwini Bapat, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/xwCxlJNu6UV87rCmQiJuNZWlTq4oszMjwAdyRnpP.jpg)
Ashwini Bapat, MD
Contributor
![photo of Miriam Barshak, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10401/Miriam-Barshak.jpg)
Miriam Barshak, MD
Contributor
![photo of Melissa Bartick, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10000/Bartick-2018-headshot-color.jpg)
Melissa Bartick, MD
Contributor
![photo of Elizabeth Bashoff, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9807/Bashoff.jpg)
Elizabeth Bashoff, MD
Contributor
![photo of Nicole Baumer, MD, MEd](https://d2icykjy7h7x7e.cloudfront.net/authors/hR9OwvI0UWBA3gxTLYkVUN5ZkPJeVNk5OGE4GC8q.jpg)
Nicole Baumer, MD, MEd
Contributor
![photo of Lisa Bebell, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9929/Lisa-Bebell-Headshot_1912_low-res.jpg)
Lisa Bebell, MD
Contributor
![photo of Mark Benson, MD, PhD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9737/20150929_markbensonheadshot_asa001-copy-1.jpg)
Mark Benson, MD, PhD
Contributor
![photo of Bonnie Bermas, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/8696/Bonnie-B.jpeg)
Bonnie Bermas, MD
Contributing Editor
![photo of Rachelle Bernacki, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/OGlD3Q29SixtT4NguSJlDCfhTcIoOZFWX01m5krp.jpg)
Rachelle Bernacki, MD
Contributor
![photo of Aaron Bernstein, MD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/9938/bernstein-Credit-Harvard.jpg)
Aaron Bernstein, MD, MPH
Contributor
![photo of Carolyn A. Bernstein, MD, FAHS](https://domf5oio6qrcr.cloudfront.net/medialibrary/9360/3T2L1A96.jpg)
Carolyn A. Bernstein, MD, FAHS
Contributor
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/13887/conversions/28625bc5-0572-4259-b78b-f74ebfd57c0b-micro.jpg)
A muscle-building obsession in boys: What to know and do
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16311/conversions/gettyimages-1187993811-micro.jpg)
Calcium-rich foods: How to boost your intake of this important mineral
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16310/conversions/gettyimages-1187249966-micro.jpg)
DNR: What is a do-not-resuscitate order?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16297/conversions/gettyimages-1448461961-micro.jpg)
Sleep hygiene: Simple practices for better rest
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/12526/conversions/ed6fb414-d554-4b09-b3d8-47b47b53af16-micro.jpg)
Should you be tested for inflammation?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16266/conversions/gettyimages-1643811315-micro.jpg)
Torn meniscus: Symptoms, diagnosis, and treatment options
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15304/conversions/384b5a4a-770a-47f3-b8e5-9422e290d096-micro.jpg)
Life can be challenging: Build your own resilience plan
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16209/conversions/gettyimages-1653418139-micro.jpg)
Alcohol and your health: Risks, benefits, and controversies
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16151/conversions/gettyimages-2178501218-micro.jpg)
DHEA supplements: Are they safe? Or effective?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/16144/conversions/gettyimages-1403932695-micro.jpg)
Malnutrition in older adults: Strategies for addressing this common problem