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High-fat diet-related stimulation of sweetness desire is greater in women than in men despite high vegetable intake

Abstract Objective To examine the effects of lunches with different dietary energy densities on food preferences between genders. Design Randomized crossover study. Participants were administered the following packed test meals once weekly on a specified day during six sessions: control (150 g of rice with a sautéed beef entrée containing 40 g of raw beef and 240 g of vegetables), high-meat/low-rice, low-vegetable, medium-fat/low-vegetable, high-fat and high-fat/low-vegetable meals. Subjective levels of sensory properties were assessed over time using visual analogue scales. Setting University of Tokushima Graduate School, Tokushima, Japan. Subjects Sixty-five men and sixty-five women matched by age and BMI. Results Men showed significantly stronger desires for salty and fatty foods after meals (P<0·05). Women showed a significantly stronger desire for sweetness from 2 h after the low-vegetable meal, and increasing fat content under high-vegetable conditions caused a significant stimulated sweetness desire in women more than in men (P<0·05). Moreover, after a high-meat/low-rice meal with 100 g of rice, sweetness desire was stronger in women (P=0·024), whereas no significant differences in sweetness desire were shown between genders after another low-energy-density control meal with 150 g of rice. Conclusions Men had significantly stronger desires for salty and fatty foods, whereas women preferred sweet food after meals. The sweetness desire in women was stimulated by increasing fat content, even with a high vegetable intake. Low rice intake in a low-energy-density diet also caused a relative stimulation of sweetness desire in women.