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Asian Flush Is an Adaptive Response to Encourage People Genetically to Not Drink
Asian flush is an adaptive response to encourage people genetically to not drink in order to not do stupid shit while they're drunk. Another famous one has to do with lactase tolerance. So sorry, lactose tolerance. Most mammals lose the genes for producing the enzyme lactase that allows us to digest lactose in milk. Humans are one of the only exceptions. There are some populations across the world that keep this enzyme and that allow us to continue eating dairy products through adulthood.