![Frontiers | Investigating the Potential for Ultraviolet Light to Modulate Morbidity and Mortality From COVID-19: A Narrative Review and Update Frontiers | Investigating the Potential for Ultraviolet Light to Modulate Morbidity and Mortality From COVID-19: A Narrative Review and Update](https://www.frontiersin.org/files/Articles/616527/fcvm-07-616527-HTML/image_m/fcvm-07-616527-g001.jpg)
Frontiers | Investigating the Potential for Ultraviolet Light to Modulate Morbidity and Mortality From COVID-19: A Narrative Review and Update
![Can you catch a tan through a window? Here's how much vitamin D gets absorbed through glass – The Sun | The Sun Can you catch a tan through a window? Here's how much vitamin D gets absorbed through glass – The Sun | The Sun](https://www.thesun.co.uk/wp-content/uploads/2017/06/nintchdbpict000332997495.jpg?strip=all&quality=100&w=1920&h=1440&crop=1)
Can you catch a tan through a window? Here's how much vitamin D gets absorbed through glass – The Sun | The Sun
![A revised action spectrum for vitamin D synthesis by suberythemal UV radiation exposure in humans in vivo | PNAS A revised action spectrum for vitamin D synthesis by suberythemal UV radiation exposure in humans in vivo | PNAS](https://www.pnas.org/cms/10.1073/pnas.2015867118/asset/dacb2b2c-213e-40f8-81de-92fec454f0b9/assets/images/large/pnas.2015867118fig01.jpg)
A revised action spectrum for vitamin D synthesis by suberythemal UV radiation exposure in humans in vivo | PNAS
![You Could Be Vitamin D-thirsty And Not Know It — Bloodworks Lab Inc. | Repro-Immuno, Chemistry & Hematology tests You Could Be Vitamin D-thirsty And Not Know It — Bloodworks Lab Inc. | Repro-Immuno, Chemistry & Hematology tests](https://images.squarespace-cdn.com/content/v1/5ad9d1f9620b85b47733d350/9ed0627c-951a-49ab-b213-40ea8a6aa04d/louvre-ga8f6d620a_1920.jpg)