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UVA destruction rate of VitA
Quote from
Shannon on June 16, 2023, 6:18 am
Quote from
Armin on June 15, 2023, 10:47 pm
Quote from
Shannon on June 15, 2023, 8:07 pm
Quote from
Armin on June 15, 2023, 3:52 pm
Sun seems to make my symptoms worse, especially Neuro ones.
Vitamin D competes with vitamin A so increasing vitamin D at the skin level may mobilize vitamin A into circulation as retinaldehyde. What happens next may be due to how your body can adapt to the sudden change.
That's true, but it equalizes...UVB creates VitD, UVA destroys it. And, the absorption is over a three day period (with the most in the first few hours, of course)
But, interesting experience nevertheless. I do think some of the UVA may oxidize it to Retinoic acid, but UVA waves are not like enzymes...they hit the retinyl ester (or carotenoid) wherever they hit it. Hopefully rendering it harmless.
I wasn't aware that UVA destroyed VitD.
Yup! And it's why being inside behind UV filters is extremely harmful.
https://www.sciencedirect.com/science/article/abs/pii/S0306987708005999?via%3Dihub
Quote from
Armin on June 15, 2023, 10:47 pm
Quote from
Shannon on June 15, 2023, 8:07 pm
Quote from
Armin on June 15, 2023, 3:52 pm
Sun seems to make my symptoms worse, especially Neuro ones.
Vitamin D competes with vitamin A so increasing vitamin D at the skin level may mobilize vitamin A into circulation as retinaldehyde. What happens next may be due to how your body can adapt to the sudden change.
That's true, but it equalizes...UVB creates VitD, UVA destroys it. And, the absorption is over a three day period (with the most in the first few hours, of course)
But, interesting experience nevertheless. I do think some of the UVA may oxidize it to Retinoic acid, but UVA waves are not like enzymes...they hit the retinyl ester (or carotenoid) wherever they hit it. Hopefully rendering it harmless.
I wasn't aware that UVA destroyed VitD.
Yup! And it's why being inside behind UV filters is extremely harmful.
https://www.sciencedirect.com/science/article/abs/pii/S0306987708005999?via%3Dihub
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Quote from
Armin on June 16, 2023, 10:06 am
Quote from
Shannon on June 16, 2023, 6:18 am
Quote from
Armin on June 15, 2023, 10:47 pm
Quote from
Shannon on June 15, 2023, 8:07 pm
Quote from
Armin on June 15, 2023, 3:52 pm
Sun seems to make my symptoms worse, especially Neuro ones.
Vitamin D competes with vitamin A so increasing vitamin D at the skin level may mobilize vitamin A into circulation as retinaldehyde. What happens next may be due to how your body can adapt to the sudden change.
That's true, but it equalizes...UVB creates VitD, UVA destroys it. And, the absorption is over a three day period (with the most in the first few hours, of course)
But, interesting experience nevertheless. I do think some of the UVA may oxidize it to Retinoic acid, but UVA waves are not like enzymes...they hit the retinyl ester (or carotenoid) wherever they hit it. Hopefully rendering it harmless.
I wasn't aware that UVA destroyed VitD.
Yup! And it's why being inside behind UV filters is extremely harmful.
https://www.sciencedirect.com/science/article/abs/pii/S0306987708005999?via%3Dihub
Interesting. It seems that UVA destroys VitD but at a much lower level than what UVB creates when outside, when getting both UV bands.
Quote from
Shannon on June 16, 2023, 6:18 am
Quote from
Armin on June 15, 2023, 10:47 pm
Quote from
Shannon on June 15, 2023, 8:07 pm
Quote from
Armin on June 15, 2023, 3:52 pm
Sun seems to make my symptoms worse, especially Neuro ones.
Vitamin D competes with vitamin A so increasing vitamin D at the skin level may mobilize vitamin A into circulation as retinaldehyde. What happens next may be due to how your body can adapt to the sudden change.
That's true, but it equalizes...UVB creates VitD, UVA destroys it. And, the absorption is over a three day period (with the most in the first few hours, of course)
But, interesting experience nevertheless. I do think some of the UVA may oxidize it to Retinoic acid, but UVA waves are not like enzymes...they hit the retinyl ester (or carotenoid) wherever they hit it. Hopefully rendering it harmless.
I wasn't aware that UVA destroyed VitD.
Yup! And it's why being inside behind UV filters is extremely harmful.
https://www.sciencedirect.com/science/article/abs/pii/S0306987708005999?via%3Dihub
Interesting. It seems that UVA destroys VitD but at a much lower level than what UVB creates when outside, when getting both UV bands.
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