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 Parul Kothari, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10229/Parul-Kothari.jpeg)
Parul Kothari, MD
Contributor
![photo of Arianne Shadi Kourosh, MD, MPH](https://d2icykjy7h7x7e.cloudfront.net/authors/qfypWoG1IPvlvhCosj0LzGShnSYq1FkjMUaDYzYI.jpg)
Arianne Shadi Kourosh, MD, MPH
Contributor
![photo of Suzanne Koven, MD, MFA](https://d2icykjy7h7x7e.cloudfront.net/authors/sVF18CjQLnEGjh3ZNwkVeDdhp8nnRRL0f9aqjpJ4.jpg)
Suzanne Koven, MD, MFA
Contributor
![photo of Rebecca Kranz](https://d2icykjy7h7x7e.cloudfront.net/authors/W6kElfk3gU7NwbYaBb70MoDvBycXR6W4E6nWiYQD.jpg)
Rebecca Kranz
Health Writer
![photo of Lorrie Kubicek, MT-BC](https://d2icykjy7h7x7e.cloudfront.net/authors/CjYwyiTuv5SoXtkMpaul14MUhaRxmRgtYiNsYzTK.jpg)
Lorrie Kubicek, MT-BC
Contributor
![photo of Daniel Kuritzkes, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9659/DRK-labcoat-Fall-2015.jpg)
Daniel Kuritzkes, MD
Contributor
![photo of Daniela J. Lamas, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9463/Daniela-Lamas-Headshot.jpg)
Daniela J. Lamas, MD
Contributor
![photo of Adam Landman, MD, MS, MIS, MHS](https://domf5oio6qrcr.cloudfront.net/medialibrary/9607/Landman-Adam-FINAL-suit-low-res-_0013web.jpg)
Adam Landman, MD, MS, MIS, MHS
Contributor
![photo of Adaira I. Landry, MD, MEd](https://d2icykjy7h7x7e.cloudfront.net/authors/hLW0ly3AJLlH8w3dSmah6ZYcBffDmHwUB6ZSNYWw.jpg)
Adaira I. Landry, MD, MEd
Contributor
![photo of Gayle Lang, OTR/L, CHT, MS](https://d2icykjy7h7x7e.cloudfront.net/authors/3ve3awzPfL17daOtsCwxzzZk4JUPWXDDlVkn5X6h.jpg)
Gayle Lang, OTR/L, CHT, MS
Contributor
![photo of Helene Langevin, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9359/Langevin-Headshot-square.jpg)
Helene Langevin, MD
Contributor
![photo of Debi LaPlante, PhD](https://d2icykjy7h7x7e.cloudfront.net/authors/0Lw2R5baDPXImt6Ilsika2iMRpGN4DG1jEScmVz4.jpg)
Debi LaPlante, PhD
Contributor
![photo of Nicole J. LeBlanc, MA](https://domf5oio6qrcr.cloudfront.net/medialibrary/9763/Nicole-LeBlanc.jpg)
Nicole J. LeBlanc, MA
Contributor
![photo of Erica H. Lee, PhD](https://d2icykjy7h7x7e.cloudfront.net/authors/RwFW7M1WrmM0MRwhxJ4MWF0QglfR6e2n5ERJLwjF.jpg)
Erica H. Lee, PhD
Contributor
![photo of Dara K. Lee Lewis, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/C3Ed61PwEQdFVBtuJyRTO5FofjL8JoBT7Y91h6CQ.jpg)
Dara K. Lee Lewis, MD
Contributor; Editorial Advisory Board Member, Harvard Health Publishing
![photo of Anthony Lembo, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10211/Anthony-Lembo-scaled.jpg)
Anthony Lembo, MD
Contributor
![photo of Inga Lennes, MD, MPH, MBA](https://domf5oio6qrcr.cloudfront.net/medialibrary/10275/Inga-Lennes.jpg)
Inga Lennes, MD, MPH, MBA
Contributor
![photo of Maureen Leonard, MD, MMSc](https://domf5oio6qrcr.cloudfront.net/medialibrary/10188/Maureen-Leonard-MD.jpg)
Maureen Leonard, MD, MMSc
Contributor
![photo of Hallie Levine](https://d2icykjy7h7x7e.cloudfront.net/authors/4KF9J8aFcaPMu3K1wlY5vb2l9qQIytcKZWOJrYqz.jpg)
Hallie Levine
Health Writer
![photo of Sharon Levy, MD, MPH](https://domf5oio6qrcr.cloudfront.net/medialibrary/9525/Levy_Sharon-014.jpg)
Sharon Levy, MD, MPH
Contributor
![photo of Howard E. LeWine, MD](https://d2icykjy7h7x7e.cloudfront.net/authors/deL6vFKwJ50Ua5wwL7mmQsGfPt7r3A31Yke9NTPv.jpg)
Howard E. LeWine, MD
Chief Medical Editor, Harvard Health Publishing
![photo of Elizabeth Liebson, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10052/Elizabeth-Liebson-headshot_1x1.jpg)
Elizabeth Liebson, MD
Contributor
![photo of John Sanford Limouze, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/9039/jsanfordlimouze.jpeg)
John Sanford Limouze, MD
Contributor
![photo of Jennifer Lin, MD](https://domf5oio6qrcr.cloudfront.net/medialibrary/10042/Jennifer-Lin.jpg)
Jennifer Lin, MD
Contributor
![photo of Kristina Liu, MD, MHS](https://domf5oio6qrcr.cloudfront.net/medialibrary/9708/Kristina-Liu-214x300-2.jpeg)
Kristina Liu, MD, MHS
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