An apple a day does not, alas, keep the doctor day, scientists reported in JAMA on April Fool's Day. Those who did eat more apples tended to go to the doctor less - but they also tended to be better educated and non-smokers, factors potentially more relevant than apple-eating. If apple the day slogan tells us anything, it's the belief (or gullibility) in superfoods. If only staying healthy was as easy as an apple a day!