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 Loren Rabinowitz, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/3Q8tikVD8wUoRZ0n1qm8AkClVcR3rKhKGW4dWyG8.jpg)
Loren Rabinowitz, MD
Contributor
![photo of David Ramsey, MD, PhD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/9755/RamseyPhotoMD.jpg)
David Ramsey, MD, PhD, MPH
Contributor
![photo of Vikram Rangan, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10225/Vikram-Rangan-headshot.jpg)
Vikram Rangan, MD
Contributor
![photo of John J. Ratey, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9940/John-Ratey-headshot.jpg)
John J. Ratey, MD
Contributor
![photo of Niyoti Reddy, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/ZfMf5znCAxOBSK6RshKVSnRkP6RNQFUPRMTbGX5C.jpg)
Niyoti Reddy, MD
Contributor
![photo of Emily Reiff, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10029/Reiff-pic.jpg)
Emily Reiff, MD
Contributor
![photo of William Renthal, MD, PhD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10007/William-Renthal.jpg)
William Renthal, MD, PhD
Contributor
![photo of Jenette Restivo](https://d2icykjy7h7x7e.cloudfront.net/authors/ag2hnSJzh6lpieumBBH19SqV9Vcf1hOgKz2OIAud.jpg)
Jenette Restivo
Health Writer; Assistant Director for Digital Content Creation and Engagement, Harvard Health Publishing
![photo of Kathryn Rexrode, MD, MPH](https://d2icykjy7h7x7e.cloudfront.net/authors/0YiDdNUs8xAgmxZPVUqGDMKXdwheLe7Sy1RZ8VkY.jpg)
Kathryn Rexrode, MD, MPH
Contributor
![photo of Kathryn Rexrode, MD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/12129/Rexrode-Headshot.jpg)
Kathryn Rexrode, MD, MPH
Contributor
![photo of Hope Ricciotti, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/Pf5aKOChTks7A7zU8u1DIWKmrpBqrPJZ1JFyMVLp.png)
Hope Ricciotti, MD
Editor at Large, Harvard Women's Health Watch
![photo of Shauna Rice, BS](https://domf5oio6qrcr.cloudfront.net/medialibrary/10436/Shauna-Rice.jpg)
Shauna Rice, BS
Contributor
![photo of James Richter, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9728/JamesRichter.jpg)
James Richter, MD
Contributor
![photo of Eric Rimm, ScD](https://d2icykjy7h7x7e.cloudfront.net/authors/PBFTOZYpZqllBwLOAi9IyhAHeNAAhEDLnKSNtMq2.jpg)
Eric Rimm, ScD
Editorial Advisory Board Member, Harvard Health Publishing
![photo of Eve Rittenberg, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9963/Eve-Rittenberg-Headshot-2018-copy.jpeg)
Eve Rittenberg, MD
Contributor
![photo of Paul Rizzoli, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/T52DQ3658L3W9KSu9vj9H5lTLL6MJZOfNhsW15y8.jpg)
Paul Rizzoli, MD
Contributor; Editorial Advisory Board Member, Harvard Health Publishing
![photo of Celeste Robb-Nicholson, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/35hpVOn8yYHfOiaFRF6eZqOQpFl9jhTfQOBd0uiM.png)
Celeste Robb-Nicholson, MD
Contributor
![photo of Laura K. Rock, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10114/Laura-Rock-headshot2017-235x300-1.jpg)
Laura K. Rock, MD
Contributor
![photo of Dennis Rosen, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/8312/Rosen.jpg)
Dennis Rosen, MD
Assistant Professor of Pediatrics, Harvard Medical School
![photo of John Ross, MD, FIDSA](https://d2icykjy7h7x7e.cloudfront.net/authors/EP4zm3M7kugHnmdfOwFMUKMNXHkzTa4fez23DanQ.jpg)
John Ross, MD, FIDSA
Contributor; Editorial Advisory Board Member, Harvard Health Publishing
![photo of Natalia S. Rost, MD, MPH, FAAN, FAHA](https://d2icykjy7h7x7e.cloudfront.net/authors/20MPuGS33wQKAec87RvbxLowSa4BaOdaLTv2t4uB.jpg)
Natalia S. Rost, MD, MPH, FAAN, FAHA
Contributor
![photo of Christian Ruff, MD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/9664/Ruff-Christian-MD_HR.jpg)
Christian Ruff, MD, MPH
Contributor
![photo of Emily S. Ruiz, MD, MPH](https://d2icykjy7h7x7e.cloudfront.net/authors/tclAYlpjhwfbLTVKt33KNNdDjGzkft7T0l6Lw1vo.jpg)
Emily S. Ruiz, MD, MPH
Contributor; Editorial Advisory Board Member, Harvard Health Publishing
![photo of Elisabeth J. Ryan, JD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/9356/Elisabeth.jpg)
Elisabeth J. Ryan, JD, MPH
Guest 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