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
88%
5%
2%
2%
35
flagUkraine
67%
20%
4%
6%
62
flagItaly
66%
12%
10%
10%
50
flagPoland
60%
20%
9%
8%
21230
flagNorway
60%
17%
4%
17%
46
flagMalaysia
60%
26%
7%
5%
38
flagthe United Kingdom
58%
17%
11%
11%
681
flagthe United Arab Emirates
58%
23%
11%
5%
34
flagSpain
58%
13%
20%
3%
29
flagPakistan
57%
15%
15%
12%
40
flagthe Netherlands
56%
26%
12%
5%
75
flagIndia
54%
25%
10%
9%
396
flagGermany
54%
23%
10%
12%
270
flagRepublic of Ireland
53%
24%
12%
8%
94
flagFrance
51%
25%
15%
8%
60
flagthe United States
48%
21%
14%
13%
1035
flagUnknown
47%
27%
13%
11%
176
flagCanada
47%
25%
16%
10%
99
flagAustralia
47%
18%
22%
11%
71
flagthe Philippines
40%
32%
10%
14%
49

Gender

men59%
women58%
a sugar
59%
58%
a lactic acid
21%
20%
a protein
10%
11%
a process of milk fermentation
8%
8%

Details

Author: Kasia
Illustration: Steven Depolo
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