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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: Gastric emptying was significantly (P < 0.02) prolonged after chewing Khat compared with lettuce. CONCLUSION: The sympathomimetic action of cathinone in Khat may cause the observed delay in gastric emptying.
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Heymann et al. (1995) studied this question.
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