Recent Blog Articles
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15477/conversions/59f61b05-2e23-463a-a0f7-b8aef6addd73-micro.jpg)
Testosterone-blocking drugs boost heart disease risk when given in combination
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15472/conversions/9f706d6e-3ba5-441f-a1ce-d93af96cdb5d-micro.jpg)
Parenting isn't easy: Two important skills can help
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/14937/conversions/fcff561e-5fc9-4fbd-aac0-b9ea3778052b-micro.jpg)
Does sleeping with an eye mask improve learning and alertness?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15415/conversions/2acee670-1e43-413e-a07b-437512d22803-micro.jpg)
Do tattoos cause lymphoma?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/14051/conversions/dea50ed5-99ea-4779-aa5b-56fae11aaa92-micro.jpg)
Hot weather hikes: Staying safe when temperatures spike
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15405/conversions/f22b5f3d-fd64-479d-b10a-b2409347f160-micro.jpg)
Cannabis drinks: How do they compare to alcohol?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15404/conversions/ccd2e44a-96c4-492f-a05c-c2706549efc0-micro.jpg)
What is Lewy body dementia?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15083/conversions/2fa8315b-f48e-43fb-8b56-d681a1715343-micro.jpg)
Dog bites: How to prevent or treat them
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15386/conversions/33679f9f-8065-4e13-a188-2ca67472b36f-micro.jpg)
Ever read your medical record? Here's why you should
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/14810/conversions/778f3d8c-0b73-420c-8d03-e8542d49660d-micro.jpg)
Shining light on night blindness
Harvard Health Experts and Contributors
List of Experts
![photo of Stephanie Collier, MD, MPH](https://d2icykjy7h7x7e.cloudfront.net/authors/NtniFzoHBf79gHOJQE5pcKpakG5kAlB1oJsx9Jc9.jpg)
Stephanie Collier, MD, MPH
Contributor; Editorial Advisory Board Member, Harvard Health Publishing
![photo of Francesca Coltrera](https://d2icykjy7h7x7e.cloudfront.net/authors/TqVPF0YGx0xJcBXxPlTy6uaaWpQEzL1twZBXNs9d.jpg)
Francesca Coltrera
Editor, Harvard Health Blog
![photo of Amy S. Colwell, MD, FACS](https://d2icykjy7h7x7e.cloudfront.net/authors/wbvMqZrrQB1YmIf9MiE1wikk6ptCvhAzUNgdGci4.jpg)
Amy S. Colwell, MD, FACS
Contributor
![photo of Amy Comander, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/jWWgE8fmuGgJO6aQI0b99WhFyEFWweLVbdjGwxgF.jpg)
Amy Comander, MD
Contributor
![photo of Hilary Connery, MD, PhD](https://d2icykjy7h7x7e.cloudfront.net/authors/NJPGWy33X3dvykfgBzbUEkvvtECwBVw1bKcnQAEQ.png)
Hilary Connery, MD, PhD
Contributor
![photo of Julie Corliss](https://d2icykjy7h7x7e.cloudfront.net/authors/sA3ZdpCgTj4g3UoiGOBnYISWiUDAxrxi2l5SexJz.jpg)
Julie Corliss
Executive Editor, Harvard Heart Letter
![photo of Jennifer Crystal, MFA](https://d2icykjy7h7x7e.cloudfront.net/authors/9Az3pot2ftp4q3H9VR85UFlnofou24l5JPWgrtAS.jpg)
Jennifer Crystal, MFA
Senior Writer and Patient Experience Representative
![photo of Gregory Curfman, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/8578/Gregory-Curfman_395x5001.jpg)
Gregory Curfman, MD
Assistant Professor of Medicine, Former Editor-in-Chief, Harvard Health Publishing
![photo of Shinjita Das, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10250/Shinjita-Das-headshot.jpeg)
Shinjita Das, MD
Contributor
![photo of Emma Davies, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9796/EmmaDavies-lab-coat-headshot.jpg)
Emma Davies, MD
Contributor
![photo of Paul F. Dellaripa, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10215/Dellarippa-Paul-MD_HR.jpg)
Paul F. Dellaripa, MD
Contributor
![photo of Anne Densmore, Ed.D.](https://domf5oio6qrcr.cloudfront.net/medialibrary/8268/Densmore-.jpg)
Anne Densmore, Ed.D.
![photo of Neelam V. Desai, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/wXfL9831YwbdyCxc9c2wHXxFzftMQIhbnx1wUyJN.jpg)
Neelam V. Desai, MD
Contributor
![photo of Nisa Desai, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/6hpUJFu99hMcCPODzux3bgiuIYv08XryGS7pb8Wb.jpg)
Nisa Desai, MD
Contributor
![photo of Jorg Dietrich, MD, PhD](https://d2icykjy7h7x7e.cloudfront.net/authors/Dom15WR1h6d8ex6sBOXoD8gJodlUKG62GE7gLaaO.png)
Jorg Dietrich, MD, PhD
Contributor
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Amy Desrochers DiVasta, MD, MMSc
Contributor
![photo of Sara W. Dong, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10171/WinnSara.jpg)
Sara W. Dong, MD
Contributor
![photo of Darshan Doshi, MD, MS](https://domf5oio6qrcr.cloudfront.net/medialibrary/10153/20190110_mcr_darshan_doshi_019crop.jpg)
Darshan Doshi, MD, MS
Contributor
![photo of Michelle Dossett, MD, PhD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/9699/Michelle-Dossett-photo.jpg)
Michelle Dossett, MD, PhD, MPH
Contributor
![photo of Caleb Dresser, MD, MPH](https://d2icykjy7h7x7e.cloudfront.net/authors/gVvREbLXuQc4z6AF6mEEqG0DmfejDKLpqeyzguxC.jpg)
Caleb Dresser, MD, MPH
Contributor
![photo of Valeria Duque, Au.D., CCC-A](https://domf5oio6qrcr.cloudfront.net/medialibrary/10243/Valeria-Duque-051619_0006-scaled.jpg)
Valeria Duque, Au.D., CCC-A
Contributor
![photo of Jeffrey Ecker, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/8679/jeffrey-ecker.jpg)
Jeffrey Ecker, MD
Contributing Editor
![photo of Robert R. Edwards, Ph.D.](https://domf5oio6qrcr.cloudfront.net/medialibrary/8761/EdwardsR_picture.jpg)
Robert R. Edwards, Ph.D.
Contributing Editor
![photo of Andrew Eidelberg, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/RB1KUN5Dr5mn3PieyfVYbRBCllHXtdmcdl0pwwC8.jpg)
Andrew Eidelberg, MD
Contributor
![photo of David J. Einstein, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/EV4xcWtxKTifr8XZMeLq5kQzbqY8mefN0gvu7QG5.jpg)
David J. Einstein, MD
Contributor
Recent Blog Articles
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15477/conversions/59f61b05-2e23-463a-a0f7-b8aef6addd73-micro.jpg)
Testosterone-blocking drugs boost heart disease risk when given in combination
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15472/conversions/9f706d6e-3ba5-441f-a1ce-d93af96cdb5d-micro.jpg)
Parenting isn't easy: Two important skills can help
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/14937/conversions/fcff561e-5fc9-4fbd-aac0-b9ea3778052b-micro.jpg)
Does sleeping with an eye mask improve learning and alertness?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15415/conversions/2acee670-1e43-413e-a07b-437512d22803-micro.jpg)
Do tattoos cause lymphoma?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/14051/conversions/dea50ed5-99ea-4779-aa5b-56fae11aaa92-micro.jpg)
Hot weather hikes: Staying safe when temperatures spike
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15405/conversions/f22b5f3d-fd64-479d-b10a-b2409347f160-micro.jpg)
Cannabis drinks: How do they compare to alcohol?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15404/conversions/ccd2e44a-96c4-492f-a05c-c2706549efc0-micro.jpg)
What is Lewy body dementia?
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15083/conversions/2fa8315b-f48e-43fb-8b56-d681a1715343-micro.jpg)
Dog bites: How to prevent or treat them
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/15386/conversions/33679f9f-8065-4e13-a188-2ca67472b36f-micro.jpg)
Ever read your medical record? Here's why you should
![blog image 1](https://domf5oio6qrcr.cloudfront.net/medialibrary/14810/conversions/778f3d8c-0b73-420c-8d03-e8542d49660d-micro.jpg)
Shining light on night blindness