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The idea that food intake is motivated by (or in anticipation of) ‘hunger’ arising from energy depletion is apparent in both public and scientific discourse on eating behaviour. In contrast, our thesis is that eating is largely unrelated to short-term energy depletion. Energy requirements meal-to-meal are trivial compared with total body energy stores, and energy supply to the body's tissues is maintained...
We investigated the contribution of hunger and food liking to food reward, and the relationship between food reward and food intake. We defined liking as the pleasantness of taste of food in the mouth, and food reward as the momentary value of a food to the individual at the time of ingestion. Liking and food reward were measured, respectively, by ratings of the pleasantness of the taste of a mouthful,...
It has been suggested that obese individuals over-eat in order to compensate for deficits in the dopaminergic reward system. The current study used acute tyrosine/phenylalanine depletion (ATPD) to investigate the effect of reduced dopamine function on appetite and the reward value of food in healthy volunteers. The compensatory-eating hypothesis would predict an increase in the reward value and consumption...
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