=+11.49 Olestra is a fat substitute approved by the FDA for use in snack foods. To investigate reports of gastrointestinal problems associated with olestra consumption, an experiment was carried out to compare olestra potato chips with regular potato chips (“Gastrointestinal Symptoms Following Consumption of Olestra or Regular Triglyceride Potato Chips,” Journal of the American Medical Association [1998]: 150–152). Subjects were assigned at random to either the olestra chip group or the regular chip