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
flagthe Netherlands
0%
0%
0%
100%
17
flagNorway
0%
0%
0%
100%
16
flagBulgaria
0%
0%
0%
100%
11
flagCanada
0%
5%
0%
94%
19
flagSweden
0%
0%
0%
94%
18
flagRepublic of Ireland
6%
0%
0%
93%
33
flagItaly
8%
0%
0%
91%
23
flagthe United States
4%
2%
6%
84%
185
flagGermany
8%
8%
0%
83%
99
flagPoland
7%
5%
4%
82%
6401
flagIndia
4%
2%
4%
80%
47
flagthe United Kingdom
11%
5%
4%
78%
132
flagFrance
15%
15%
7%
61%
13

Gender

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

Language versions

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Which vitamin is produced in the skin during sun bathing?
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81%

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Illustration: Pedro Simões
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