What is the effect of nicotinic acid on human organism?

it is neutral
It is harmful, causes cancer
It is highly toxic, kills in 10 seconds
It is essential for functioning
Nicotinic acid, better known as niacin or vitamin B3, has nothing in common with tobacco. Chronic lack of niacin leads to pellagra, a vitamin deficiency disease.
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Answers by country

it is neutral
It is harmful, causes cancer
It is highly toxic, kills in 10 seconds
It is essential for functioning
answers
flagRussia
5%
26%
7%
60%
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flagGreece
16%
16%
8%
60%
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flagKazakhstan
4%
25%
12%
58%
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flagGermany
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36%
4%
53%
41
flagUkraine
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37%
4%
52%
195
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30%
10%
50%
30
flagPakistan
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30%
11%
49%
71
flagCanada
9%
39%
9%
42%
33
flagAustria
14%
21%
21%
42%
14
flagAustralia
3%
32%
18%
41%
55
flagthe United Kingdom
4%
47%
10%
36%
176
flagPoland
4%
51%
12%
30%
11108
flagNigeria
3%
43%
10%
30%
30
flagMalaysia
8%
40%
24%
28%
25
flagthe United States
6%
49%
14%
27%
451
flagRepublic of Ireland
0%
55%
20%
25%
20
flagIndia
4%
48%
20%
24%
452
flagthe Netherlands
23%
30%
23%
23%
13
flagSingapore
6%
68%
12%
12%
16
flagthe Philippines
14%
65%
11%
5%
35