Low Vitamin D if little UVB, supplementation helps (Antarctica) – meta-analysis Dec 2021

Vitamin D status and supplementation in Antarctica: a systematic review and meta- analysis

Int J Circumpolar Health 2021 Dec;80(1):1926133. doi: 10.1080/22423982.2021.1926133 Carolina CabalínORCID Icon,Carolina IturriagaORCID Icon,Guillermo Pérez-MatelunaORCID Icon,Denise EcheverríaORCID Icon,Carlos A. Camargo JrORCID Icon &Arturo BorzutzkyORCID Icon

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High Risk category listing contains the following__

59 items in High Risk Category (below)

Those at high-risk of being Vitamin D deficient will require about 1.5X more vitamin D to restore their levels
Those who are at risk due to being obese need about 2X more vitamin D to restore their levels

see also
  Overview Dark Skin
  Overview Seniors
  Overview Obesity
  Overview Pregnancy
  Overview Deficiency
   Shut-in category which has 36 items
   Middle East category which has 144 items

19 VitaminDWiki pages had CLOTH in the title as of Aug 2021

The 20 most recently changed items in Shut-in Category

Id	Page	Hits	Last modification	Creator	Categories
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12582	Low Vitamin D if little UVB, supplementation helps (Antarctica) – meta-analysis Dec 2021	1120	13 May, 2021 22:03	admin	UV and Vitamin D Vitamin D Far from equator High Risk Shut-in
6917	The only supplement NASA gives crews is vitamin D - Sept 2015	4533	13 May, 2021 22:00	admin	Vitamin D and Magnesium Shut-in
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4564	Recommended increasing vitamin D for space flight – NASA Sept 2013	8438	26 Nov, 2020 14:19	admin	Top news Shut-in
2019	"Sunlight Officers" in some Australian senior facilities - Sept 2011	3929	26 Jul, 2020 21:50	admin	Seniors Vitamin D in Australia and New Zealand Shut-in
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8528	People who get little noon-day sun must supplement with Vitamin D – systematic review June 2017	22377	15 Nov, 2019 16:55	admin	Noontime sun and D High Risk Top news Shut-in
537	Prisoners have very low vitamin D and get TB, influenza, and depression	18357	11 Nov, 2019 18:39	admin	Deficiency of Vitamin D Tuberculosis Depression Shut-in Virus
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11201	Simulated Mars trip ran low on vitamin D (no supplements, no UV) – Sept 2019	2228	04 Oct, 2019 17:15	admin	Shut-in
2290	1700 IU vitamin D (50000 monthly) helped antarctic explorers – RCT Jan 2012	8109	04 Oct, 2019 17:03	admin	How much Vitamin D Vitamin D Far from equator Intervention Shut-in
8564	Shut-in	21564	14 Nov, 2018 14:04	admin	Shut-in Category
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Living at high latitudes is associated with vitamin D (VD) deficiency. An ideal setting to study this is the Antarctic continent, which has temporary inhabitants, but the magnitude of the effect of living in Antarctica and the effects of VD supplementation on this population remain unclear. We performed a systematic review and meta-analysis to assess the effect of temporary residence in Antarctica and impact of VD supplementation on VD status of this population. Random‐effects meta‐analyses were performed to assess serum 25-hydroxyvitamin D (25(OH)D) concentration changes after Antarctic residence (13 studies, 294 subjects) and after VD supplementation (5 studies, 213 subjects). Serum 25(OH)D mean difference after temporary residence in Antarctica was -15.0 nmol/L (95%CI: -25.9, -4.2; I²=92%). Subgroup meta-analyses of studies evaluating Antarctic summer and winter stays showed 25(OH)D only decreases when overwintering (winter 25(OH)D change -17.0 nmol/L [95%CI: -24.1, -9.8; I²=83%] vs. summer 25(OH)D change 1.3 nmol/L [95%CI: -14.6, 17.1; I²=86%]). The meta-analysis of VD supplementation studies in Antarctica showed a mean 25(OH)D increase after supplementation of 10.8 nmol/L (95%CI: 3.3, 18.3; I²=88%). In conclusion, VD status significantly worsens after inhabiting Antarctica, particularly when over-wintering. VD supplementation can prevent worsening of VD status and should be considered in this population.

Low Vitamin D if little UVB, supplementation helps (Antarctica) – meta-analysis Dec 2021