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BACKGROUND The leaves of Khat are chewed for their central stimulant effect, but their use may cause anorexia and constipation. METHODS Gastric emptying of a radio-labelled semi-solid meal was measured in 12 healthy volunteers on two occasions a week apart. Subjects chewed either Khat leaves (Catha edulis) or lettuce for 2 h before the study. RESULTS(More)
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