Do extreme summers increase blood vitamin D (25-hydroxyvitamin D) levels?

Climate change is expected to increase the frequency of extreme weather events, such as extended heat waves and droughts in the northern hemisphere. Besides affecting ecosystems worldwide, these changes in climate patterns will also affect the environmental health of human populations. While the med...

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Vydané v:PloS one Ročník 15; číslo 11; s. e0242230
Hlavní autori: Kraus, Frank Bernhard, Medenwald, Daniel, Ludwig-Kraus, Beatrice
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States Public Library of Science 10.11.2020
Public Library of Science (PLoS)
Predmet:
25-Hydroxyvitamin D
Adult
Aged
Autoregressive processes
Bias
Biology and life sciences
Calciferol
Climate Change
Databases, Factual
Drought
Earth Sciences
Environmental aspects
Environmental changes
Environmental health
Environmental impact
Extreme weather
Female
Germany
Health aspects
Heat waves
Hospitals
Human populations
Humans
Immunoassay
Male
Medical laboratories
Medicine and health sciences
Middle Aged
Northern Hemisphere
Parameter estimation
Patients
People and places
Physical sciences
Plasma levels
Quality control
Research and Analysis Methods
Retrospective Studies
Seasons
Summer
Time series
Vitamin D
Vitamin D - analogs & derivatives
Vitamin D - blood
Vitamin deficiency
Weather
Germany
ISSN:1932-6203, 1932-6203
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Shrnutí:Climate change is expected to increase the frequency of extreme weather events, such as extended heat waves and droughts in the northern hemisphere. Besides affecting ecosystems worldwide, these changes in climate patterns will also affect the environmental health of human populations. While the medical community is mostly concerned with the negative impact of climate change, there might also be some beneficial effects. In this study we used laboratory data from a large university clinic in Germany (n = 13 406), to test for any detectable impact of two extreme summers on Vitamin-D [25(OH)D] plasma concentrations over a six year period (2014–2019). For the two years with extreme summers (2018 and 2019) the 25(OH)D plasma concentrations were significantly higher than in the previous four years (p < 0.001). A time series analysis (autoregressive term, AR, φ = 0.84, with an AR of one indicating a persistent effect) showed that 25(OH)D concentrations rise by 0.04 nmol/l (95% CI: 0.04–0.05 nmol/l) per hour of sunshine. The incidence of vitamin D deficiency was generally high (60% for 2014–2017) but dropped by 10% in 2018 and 2019. As such, the summers of 2018 and 2019, which are among the hottest and driest in Germany since the start of modern climate recordings, had a measurable positive effect on 25(OH)D plasma levels of the examined population. Given that 25(OH)D deficiency is widespread in higher latitudes, this implies that while mostly considered negative, climate change might also confer some health benefits with regard to vitamin D related medical conditions.
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Competing Interests: The authors have declared that no competing interests exist.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0242230