Which vitamin is produced in the skin during sun bathing?

vitamin A
vitamin B
vitamin C
vitamin D
Vitamin D is syn­the­sized from choles­terol in the skin with the help of the natural ul­tra­vi­o­let wave­length of sun­light. Sup­ple­men­ta­tion of vitamin D is rec­om­mend­ed only for sun-de­prived people (eg. elderly or living in the Far North).

Answers distribution

vitamin A
vitamin B
vitamin C
vitamin D
answers
flagNorway
0%
0%
0%
100%
17
flagBulgaria
0%
0%
0%
100%
12
flagFinland
0%
0%
0%
100%
11
flagRepublic of Ireland
5%
0%
0%
95%
40
flagCanada
0%
4%
0%
95%
22
flagSweden
0%
0%
0%
94%
19
flagItaly
8%
0%
0%
91%
23
flagthe Netherlands
9%
0%
0%
90%
21
flagGermany
6%
6%
0%
86%
118
flagUnknown
12%
2%
0%
85%
40
flagthe United States
4%
1%
7%
84%
203
flagPoland
6%
4%
4%
83%
7323
flagthe United Kingdom
10%
4%
4%
80%
190
flagIndia
5%
1%
5%
77%
53
flagFrance
8%
8%
13%
69%
23

Gender

men78%
women86%
vitamin A
7%
6%
vitamin B
8%
3%
vitamin C
4%
3%
vitamin D
78%
86%

Language versions

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Which vitamin is produced in the skin during sun bathing?
420
80%

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Illustration: Pedro Simões
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