FoodNutrition
Most adults on Earth cannot digest milk.
Being able to is the genetic mutation. Roughly two thirds of humans lose the enzyme.
Source
This fact is written from the English Wikipedia article it links to, so you can check every word in one tap. Fact Drop rates that source 4 out of 5 for credibility, and the rating travels with the fact on the back of its card in the app.
Why it sounds fake
What most people think
Drinking milk is normal, and not being able to is the defect.
What is actually true
The ability is the mutation; losing the enzyme after childhood is the human default.
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