The rare ALDH2 allele is found more commonly in East Asian populations. It has been associated with the reddening of the face and neck following alcohol intake – known as ‘Asian Flush’.

Global population distribution:

Source: 1000 Genome Project. Global averages for both sexes

Global population distribution:

Source: 1000 Genome Project. Global averages for both sexes

ALDH2: AA

1%

ALDH2: AG

5%

ALDH2: GG

94%

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