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Because of impaired kidney function, I get my vitamin D levels monitored every month. Yes supplements can take 2-3 months to increase the levels. The sun actual
by pkaye 9y ago
Because of impaired kidney function, I get my vitamin D levels monitored every month. Yes supplements can take 2-3 months to increase the levels. The sun actually works pretty good if you can stay outside 15 minutes in noon sun. But that's difficult in the winter months.
- timewarrior 9y agoAnother big challenge in winter months is that people are so covered with warm clothes, that even going out in Sun doesn't help much.
- pkaye 9y agoI wonder if glass windows would block out the benefits?
- mjevans 9y agoAnecdotally, a lot of window products have built in films, coatings, or dopants that reduce UV exposure and possibly other portions of the spectrum. I would /guess/ that pure (greenhouse?) glass, maybe not even visibly transparent, would be effective. Both could be worth studying if someone hasn't already.
- AstralStorm 9y agoGlass itself blocks a lot of UV. Even not doped. There exist optically transparent plastics that do not.
- gmaillogin 9y agoIt helps prevent ultraviolet rays from sunlight.https://www.hotmailsigninguide.com https://www.hotmailsigninguide.com
- rollulus 9y agoYes it does block [1]. Coincidentally I was discussing this with a co-worker last week. [1]: http://www.sciencefocus.com/qa/can-you-absorb-vitamin-d-through-window http://www.sciencefocus.com/qa/can-you-absorb-vitamin-d-thro...
- Gibbon1 9y agoOrdinary window glass blocks 90% of UV-B which is needed to produce VitD. I do remember reading years ago about a sanitarium in the late 1800's - early 1900 where the windows in the sun rooms were quartz glass.
- Johnny555 9y agoI've read varying reports of how much sun you need to generate a day's supply of vitamin D, but rarely do they mention how much skin needs to be exposed. Face only? Face and arms? Entire upper body? Entire body? Is there some online resource for this with time of year and latitude corrections? I imagine there's quite a difference between vitamin D production in noon sun in Fairbanks Alaska versus Miami Florida.
- cellis 9y agoDepends on a lot of things as you mentioned, but also especially on your pigmentation/levels of sunburn. I'm very dark skinned, so I need a lot longer for UV rays to penetrate.
- astura 9y agoWould depend on how dark your skin is.
- appleiigs 9y agoI did some searching... "John Jacob Cannell, MD, executive director of The Vitamin D Council, notes that the skin makes 10,000 IU of vitamin D after 30 minutes of full-body sun exposure. He suggests that 10,000 IU of vitamin D is not toxic." https://www.webmd.com/osteoporosis/features/the-truth-about-vitamin-d-can-you-get-too-much-vitamin-d https://www.webmd.com/osteoporosis/features/the-truth-about-...
- AstralStorm 9y agoExcept that 10000 IU is mostly localized in skin and released a bit slower.
- pkaye 9y agoFor it, my face and arms are exposed. I walk in the bay area sun for 15 minutes after lunch. Doing this regularly over a month or two will boost my numbers from the mid 20s to mid 30s.
- twobyfour 9y agoNot to mention it needs to be adjusted for skin tone. The whole reason that humans have a range of skin tones is that paler skin allows for better vitamin D absorption at higher latitudes.