There’s a classic moment the 1995 movie Clueless, in which our protagonist, sweet if self-interested 15-year-old Cher, turns down the offer of coffee with the line: “Duh! It might stunt my growth, and I want to be 5’10” like Cindy Crawford.”

No further explanation is required; the idea that drinking coffee can impede growth is a pervasive one. But is there any truth in it, or is this a myth designed to keep kids away from a legal stimulant?

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