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%
34
flagItaly
68%
12%
10%
8%
47
flagNorway
63%
15%
4%
15%
44
flagMalaysia
63%
22%
8%
5%
36
flagSpain
60%
14%
21%
0%
28
flagPoland
59%
21%
9%
8%
19879
flagUkraine
58%
29%
2%
8%
34
flagthe United Kingdom
56%
18%
12%
12%
612
flagthe United Arab Emirates
56%
26%
13%
3%
30
flagIndia
55%
24%
10%
8%
373
flagPakistan
54%
17%
17%
11%
35
flagGermany
53%
23%
10%
12%
266
flagRepublic of Ireland
52%
23%
13%
8%
89
flagthe Netherlands
52%
28%
13%
5%
69
flagFrance
52%
26%
14%
7%
57
flagUnknown
49%
25%
12%
12%
116
flagthe United States
48%
22%
14%
13%
971
flagAustralia
48%
17%
22%
11%
68
flagCanada
47%
25%
15%
10%
95
flagthe Philippines
40%
32%
10%
14%
49

Gender

men58%
women58%
a sugar
58%
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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