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
flagItaly
68%
12%
10%
8%
48
flagNorway
62%
17%
4%
15%
45
flagUkraine
61%
26%
2%
9%
42
flagPoland
60%
20%
9%
8%
20638
flagMalaysia
60%
26%
7%
5%
38
flagthe United Arab Emirates
58%
23%
11%
5%
34
flagSpain
58%
13%
20%
3%
29
flagthe United Kingdom
56%
18%
12%
12%
634
flagIndia
55%
25%
10%
9%
384
flagPakistan
54%
17%
17%
11%
35
flagGermany
53%
23%
10%
12%
267
flagRepublic of Ireland
52%
24%
12%
8%
93
flagthe Netherlands
52%
28%
12%
5%
70
flagFrance
51%
25%
13%
8%
58
flagUnknown
50%
26%
12%
11%
150
flagthe United States
49%
22%
14%
13%
1017
flagAustralia
48%
17%
22%
11%
68
flagCanada
47%
24%
16%
10%
97
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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