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__

55 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 35 items
   Middle East category which has 138 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
12886	One group of coal miners had surprising high Vitamin D levels in Sept (suspect low-cost UVB) – Sept 2021	115	09 Sep, 2021 20:05	admin	UV and Vitamin D High Risk Shut-in
12582	Low Vitamin D if little UVB, supplementation helps (Antarctica) – meta-analysis Dec 2021	591	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	3855	13 May, 2021 22:00	admin	Vitamin D and Magnesium Shut-in
12301	RDA of Vitamins and minerals reduced incarceration by 2,993 dollars per prisoner – RCT Jan 2021	501	05 Feb, 2021 16:56	admin	Shut-in
8973	NASA might save 700,000 dollars a day by giving astronauts enough Vitamin D	2485	13 Jan, 2021 20:43	admin	Cost savings with Vitamin D Shut-in
4564	Recommended increasing vitamin D for space flight – NASA Sept 2013	7655	26 Nov, 2020 14:19	admin	Top news Shut-in
2019	"Sunlight Officers" in some Australian senior facilities - Sept 2011	3644	26 Jul, 2020 21:50	admin	Seniors Vitamin D in Australia and New Zealand Shut-in
11821	Nursing homes could reduce risk of COVID-19 with Vitamin D – June 30, 2020	2163	14 Jul, 2020 21:30	admin	Seniors High Risk Shut-in Virus
8528	People who get little noon-day sun must supplement with Vitamin D – systematic review June 2017	18058	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	16340	11 Nov, 2019 18:39	admin	Deficiency of Vitamin D Tuberculosis Depression Shut-in Virus
4857	Submariners vitamin D levels continued to drop while on patrol (no surprise) – Dec 2013	3380	04 Oct, 2019 17:17	admin	Shut-in
11201	Simulated Mars trip ran low on vitamin D (no supplements, no UV) – Sept 2019	1447	04 Oct, 2019 17:15	admin	Shut-in
2290	1700 IU vitamin D (50000 monthly) helped antarctic explorers – RCT Jan 2012	7393	04 Oct, 2019 17:03	admin	How much Vitamin D Vitamin D Far from equator Intervention Shut-in
8564	Shut-in	19978	14 Nov, 2018 14:04	admin	Shut-in Category
9214	Spinal Cord Injury wheelchair athletes helped by 12 weeks of Vitamin D – Sept 2016	3236	29 Sep, 2018 23:21	admin	Intervention Spinal Cord Shut-in
4034	Pressure Ulcers (bed sores) 1.87 more likely if vitamin D less than 25 ng – 2011	4884	14 Aug, 2018 12:00	admin	Top news Shut-in
9638	Radiologists are 1.7 X more likely to have low vitamin D (probably indoors too much) – Feb 2018	1997	19 May, 2018 10:29	admin	Shut-in
5141	Black prisoners have lower vitamin D than whites in maximum security – March 2014	2629	30 Dec, 2017 15:28	admin	Skin - Dark Shut-in
2810	Children with limited mobility are at high risk of being vitamin D deficient – June 2012	2771	15 Jul, 2017 12:51	admin	Infant-Child Shut-in
8563	Long-Term bedridden patients have poor vitamin D and poor bones – June 2017	4213	15 Jul, 2017 12:49	admin	Bone - Health Infant-Child Shut-in

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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