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.

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72%

16%

1317

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19%

126

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70%

21%

202

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65%

18%

13%

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63%

17%

10%

174

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16%

13%

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11%

16%

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11%

30793

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27%

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135

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28%

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13%

1336

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20%

17%

16%

700

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43%

17%

26%

11%

184

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42%

32%

10%

11%

974

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41%

24%

15%

17%

1620

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39%

22%

12%

24%

166

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13%

27%

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11%

619

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32%

38%

14%

13%

162

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10%

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158

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28%

37%

12%

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121

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