Lactose intolerance is a frequent reason to avoid milk and dairy products. What is lactose?

a sugar
a lactic acid
a protein
a process of milk fermentation
Lactose is a dis­ac­cha­ride sugar that makes up around 2-8% of milk. Lactose in­tol­er­ance is not an allergy. It is the in­abil­i­ty to digest lactose due to in­suf­fi­cient levels of lactase, the enzyme that me­tab­o­lizes lactose into glucose and galac­tose.

Answers distribution

a sugar
a lactic acid
a protein
a process of milk fermentation
answers
flagFinland
86%
6%
3%
3%
29
flagItaly
70%
14%
4%
9%
41
flagUkraine
70%
16%
4%
8%
24
flagNorway
66%
15%
2%
15%
39
flagMalaysia
66%
21%
6%
6%
33
flagSpain
60%
16%
20%
0%
25
flagPoland
58%
21%
9%
9%
17424
flagthe United Kingdom
55%
18%
13%
12%
520
flagIndia
55%
25%
10%
9%
320
flagRepublic of Ireland
53%
20%
14%
10%
78
flagthe Netherlands
53%
24%
16%
5%
54
flagAustria
52%
23%
14%
9%
21
flagGermany
50%
25%
11%
12%
217
flagthe United States
48%
22%
14%
13%
875
flagCanada
48%
26%
15%
9%
83
flagAustralia
48%
16%
22%
12%
62
flagFrance
47%
26%
15%
10%
38
flagPakistan
46%
23%
19%
11%
26
flagCzech Republic
42%
42%
10%
5%
19
flagthe Philippines
41%
33%
10%
12%
48

Gender

men57%
women58%
a sugar
57%
58%
a lactic acid
21%
21%
a protein
11%
11%
a process of milk fermentation
8%
8%

Details

Author: Kasia
Illustration: Steven Depolo
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