How Much Does Staying Inside All Day Impact Your Vitamin D Levels & Health?
Key takeaways
- Because when UVB rays hit your skin, it kicks off a synthesis process that contributes to your overall levels.
- A new review published in Frontiers in Nutrition1 looked at exactly that question.
- To do this, researchers conducted a scoping review (aka looked at all the data available on the topic).
Why this matters: practical guidance grounded in recent research or expert insight.
Author: Molly Knudsen, M.S., RDNJune 06, 2026Registered Dietitian Nutritionist By Molly Knudsen, M.S., RDNRegistered Dietitian Nutritionist Molly Knudsen, M.S., RDN is a Registered Dietician Nutritionist with a bachelor’s degree in nutrition from Texas Christian University and a master’s in nutrition interventions, communication, and behavior change from Tufts University. She lives in Newport Beach, California, and enjoys connecting people to the food they eat and how it influences health and wellbeing.Image by Mihajlo Ckovric / StocksyJune 06, 2026Sun exposure is one of the ways your body makes vitamin D. Because when UVB rays hit your skin, it kicks off a synthesis process that contributes to your overall levels. It's rarely enough on its own to maintain truly optimal status, but it does provide some baseline support. But what happens when you spend your days working inside, with little to no midday sun?
A new review published in Frontiers in Nutrition1 looked at exactly that question. Here's what you need to know.
The goal of this review was to map the existing evidence on vitamin D deficiency among healthcare workers, specifically looking at how common it is, what health effects have been documented, and whether there's any connection to workplace productivity.