Pigs were given ultraviolet light or vitamin D daily – Aug 2024

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UV light exposure vs. vitamin D supplementation: a comparison of health benefits and vitamin D metabolism in a pig model

The Journal of Nutritional Biochemistry https://doi.org/10.1016/j.jnutbio.2024.109746

Lots of Vitamin D found in skin (UV is similar to giving vitamin D topically)

There is limited data on the effect of UV light exposure versus orally ingested vitamin D3 on vitamin D metabolism and health. A 4-week study with 16 pigs (as a model for human physiology) was conducted. The pigs were either supplemented with 20 µg/d vitamin D3 or exposed to UV light for 19 min/d to standardise plasma 25-hydroxyvitamin D3 levels. Important differences were higher levels of stored vitamin D3 in skin and subcutaneous fat, higher plasma concentrations of 3-epi-25-hydroxyvitamin D3 and increases of cutaneous lumisterol3 in UV-exposed pigs compared to supplemented pigs. UV light exposure compared to vitamin D3 supplementation resulted in lower hepatic cholesterol, higher circulating plasma nitrite, a marker of the blood pressure-lowering nitric oxide, and a reduction in the release of pro- and anti-inflammatory cytokines from stimulated peripheral blood mononuclear cells. However, plasma metabolome and stool microbiome analyses did not reveal any differences between the two groups.
To conclude, the current data show important health relevant differences between oral vitamin D3 supplementation and UV light exposure. The findings may also partly explain the different vitamin D effects on health parameters obtained from association and intervention studies.
 Download the PDF from VitaminDWiki

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VitaminDWiki – UV and D contains

378 items in UV category   see also

• Overview UV and vitamin D
• Vitamin D bulb for use in the home - or perhaps office,
• Sun and UV
• Sun and Vitamin D category has 329 items
• UV and Vitamin D calculators,  Vitamin D from low-cost UVB lamps
• UVB added in classroom reduced cavities, increased height, increased academics. etc
• How to safely get Vitamin D at home from a UV lamp or LED
• Vitamin D production after UVB exposure – A comparison of exposed skin regions – Feb 2015
• Ultra-low UV LED added to office desk lamp would add 7 ng to winter Vitamin D levels – RCT Oct 2022
• Seniors get about 4X less vitamin D from the sun or UVB
• Vitamin D from the sun without the heat (silver-coated plexiglass)
• COVID and other Virus fought by UV - many studies 16+
• 3.3 X more likely to be Vitamin D deficient if wear long-sleeves – Oct 2022
• Non-oral Vitamin D should be a better form for MS, food allergy, PTSD, etc. – many studies UV, etc.

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VitaminDWiki - Overview Veterinary and vitamin D contains:

Veterinary category has 149 items

Animals need Vitamin D too

• Vitamin D is important for pregnancies (pigs as well as people)– Sept 2022
• Many Vitamin D similarities: people and cows - March 2022
• Several advanced-maternal-age problems reduced if given Vitamin D during pregnancy (mice in this case) – July 2021
• Poor immune system associated with low Vitamin D (dogs in this case) – June 2020
• Chicken bones, eggs, and activated vitamin D in eggs increased with 2 hours of daily UVB – Dec 2019
• Vitamin D in eggs increased 4X after UV lighting near legs was added – April 2019
• Hens with Vitamin D were better in at least 5 ways – RCT Aug 2018

Pets as well

• Critically ill dogs with good levels of vitamin D have much better outcomes (humans too) – March 2018
• Half of dogs now get cancer, it used to be just 1 percent (probably low Vitamin D)
• Dogs, cats, rabbits, guinea pigs, pet birds, etc need Vitamin D
• Dogs with Cancer have low vitamin D, same as humans – Sept 2017
• Companion animals (dog, cats) need vitamin D too – March 2016
• Hospitalized cats 8X more likely to die if low vitamin D (Vit. D helps humans too) – May 2015
• Rickets increasing in dogs

Farm Vets are paid when their "patients" are healthy,
   vs doctors who are paid only when "patients" become sick
Cows are routinely given 30 IU per kilogram (which would be 10,000 IU for a 150 lb person)
Same information is available on Cattle need 66 IU of vitamin D per pound
The US RDA of vitamin D for cows is 13 IU per kilogram (which would be 4,300 IU for a 150 lb 'cow')
Virtually all US farmers who raise livestock use feed that is supplemented with vitamin D
Merick Vet Manual supplement if not have UV or sunlight

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VitaminDWiki - 12 studies in both categories UV and Veterinary

This list is automatically updated