3 ms·
How do vitamin D levels decrease over time if you stop supplementing or stop going outside? For example, say I'm super active and outdoors every day, my D leve
by eagsalazar2 6y ago
How do vitamin D levels decrease over time if you stop supplementing or stop going outside?
For example, say I'm super active and outdoors every day, my D levels are great. Then I get, say, Covid-19, and I stay inside for a week feeling icky. If I'm not recovered yet, are my D levels still good? Or am I now at higher risk for Covid complications because my D has decreased?
There are all sorts of questions that could be answered by understanding this better. If I am outdoorsy and take a day to work inside on a project, should I supplement that day? What if I am a tech worker who is inside most days but I do 2-3 outdoor activities per week? Am I good? Or should I be supplementing?
If I take a D supplement and 2 hours later take a D test, does it matter? What about when I first wake up and haven't been in the sun for 10 hours?
I have no idea the answer to any of these questions (as a tech worker who supplements, goes outside for hikes/rides 2-3/week, and has a Vitamin D test sitting on my self, wondering when I should take it...)
- fauigerzigerk 6y agoAccording to my former GP, vitamin D can fall below recommended levels over the winter months if you haven't stored up enough of it during the summer. So it's a matter of months not days. As I understand it, vitamin D first goes into the blood. Any excess is then stored in your body fat and in your liver where it can last for months. So I'm thinking that taking supplements right before a blood test could be a bad idea. But that doesn't mean depletion of stored up vitamin D happens within hours. It definitely does not.
- AQuantized 6y agoVitamin D has a half life of about a month. However, your actual ability to maintain vitamin D levels is probably proportional to how fair your skin is, much like absorption.