In the study led by Cheskin and funded by the Mushroom Council, study participants were randomly chosen to receive either beef or mushroom lunch entrees over four days -- lasagna, napoleon, sloppy Joe and chili. Subjects then switched entrees to consume the other ingredient (mushroom or beef) the following week.
Energy (calorie) intakes were significantly higher during meat meals than mushroom meals, a difference that averaged 420 more calories and 30g more fat per day over the four-day test period. Subjects' ratings for palatability (meal appeal), appetite, satiation (after meal fullness) and satiety (general fullness) did not differ between groups.