Most air pollutions reduce Vitamin D (PM2.5 is worst) – June 2021

Ambient Air Pollutions Are Associated with Vitamin D Status

Int. J. Environ. Res. Public Health 2021, 18(13), 6887; https://doi.org/10.3390/ijerph18136887
Chenlu Yang 1 , Dankang Li 2 , Yaohua Tian 2 and Peiyu Wang 3,*

• 1 Department of Nutrition and Food Hygiene, School of Public Health, Peking University, No.38 Xueyuan Road, Beijing 100191, China
• 2 Department of Maternal and Child Health, School of Public Health, Huazhong University of Science and Technology, No.13 Hangkong Road, Wuhan 430030, China
• 3 Department of Social Medicine and Health Education, School of Public Health, Peking University, No.38 Xueyuan Road, Beijing 100191, China

Evidence on the effect of ambient air pollution on vitamin D is limited. This study aimed to examine the association of air pollution exposure with serum levels of 25-hydroxyvitamin D (25OHD) using UK Biobank health datasets. A total of 448,337 subjects were included in this analysis. Land Use Regression was applied to assess individual exposures to particulate matter with diameters ≤2.5 µm (PM2.5), ≤10 µm (PM10), nitrogen dioxide (NO2), and nitrogen oxides (NOx). Linear regression models evaluated the associations between air pollutants and serum vitamin D levels after adjustment of a series of confounders. All analyzed air pollutants were negatively associated with serum vitamin 25OHD levels. After adjusting for potential confounders, a 10 μg/m3 increase in concentrations of

• PM2.5, PM10, NOx, and NO2 was associated with
• −9.11 (95%CI: −13.25 to −4.97),
• −2.47 (95%CI: −4.51 to −0.43),
• −0.56 (95%CI: −0.82 to −0.30), and
• −1.64 (95%CI: −2.17 to −1.10) nmol/L

decrease in serum vitamin 25OHD levels, respectively. Interaction analyses suggested that the effects of air pollution were more pronounced in females. In conclusion, long-term exposures to ambient PM2.5, PM10, NOx, and NO2 were associated with vitamin D status in a large UK cohort.
 Download the PDF from VitaminDWiki

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VitaminDWiki - Air Pollution reduces Vitamin D contains

Fact: Pollution reduces the amount of time that people are outdoors
Fact: Pollution is often associated with hot temperatures - another reason to not go outdoors
Fact: Less time outdoors results in lower Vitamin D levels
Fact: Pollution attenuates the amount of UVB getting to the skin (but by only a few percent)
Fact:The body's ability to fight Irritation/Inflammation is aided by vitamin D
Fact: All of the types of PM2.5 deaths are also associated with low vitamin D
Conclusion: Vitamin D supplementation helps the body fight the effects of pollution.

• There were 34 references on Air Pollution reduces Vitamin D page as of Dec 2020
• Inhaled vitamin D might turn out to be especially good form as it goes directly to the lungs.

And: Air pollution decreases Vitamin D levels (while pregnant in this case) – July 2022

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VitaminDWiki - 5 studies in both categories Deficiency and UV

This list is automatically updated

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Map of air quality levels around the world

Real time

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Map of PM2.5 levels around the world

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Pollution Decreases both 1) UVB 2) Time outdoors