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Most mammals normally cease to produce lactase, (and become lactose intolerant), after weaning. However, some human populations have developed lactase persistence (and therefore can eat dairy after adulthood). This said, research reveals intolerance to be more common globally than lactase persistence. The frequency of lactose intolerance ranges from 5% in Northern European to more than 90% in some African and Asian countries. That would mean that 95% of people form European stock and 10% of people from African and Asian stock are "not lactose intolerant".

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8y ago
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11y ago

about 30 million American adults have lactose intolerance in America.

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13y ago

about 75%

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Q: What percentage of the worlds population suffers from lactose intolerance?
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