Obesity Clinical Trial
Official title:
A Pilot Study to Investigate Neural Processing During Sensory Specific Satiety Using Gustatory Stimulation
Sensory specific satiety, or the phenomenon that the pleasantness of a particular taste declines when certain types food are consumed to satiety, plays an important role in food choice and meal termination.The rewarding effect of sugar will be investigated in a group of 30 healthy participants with a body mass index ranging from 17.5 to 35kg/m2. A gustatory stimulation paradigm designed to induce sensory specific satiety for glucose will be employed. The aim is to assess neuronal stimulus processing in relation to the sensory satiety level and to investigate the relationship with everyday eating behavior.
Sensory specific satiety, or the phenomenon that the pleasantness of a particular taste declines when certain types food are consumed to satiety, plays an important role in food choice and meal termination. Since changes in taste, smell and appetite are commonly observed in obesity, previous studies investigated the relation of sensory specific satiety to weight gain, but observed conflicting results. To gain a more detailed understanding of the relationship between sensory specific satiety and weight homeostasis, we will examine the rewarding effect of sugar in a group of 30 healthy participants with a body mass index ranging from 17.5 to 35kg/m2. We will employ a gustatory stimulation paradigm designed to induce sensory specific satiety for glucose. During fMRI scanning, glucose and water are applied orally using a gustometer. Furthermore, relevant hormonal satiety parameters are measured, as well as dietary behavior and food preferences in everyday life. This will allow us to assess neuronal stimulus processing in relation to the sensory satiety level and to investigate the relationship with everyday eating behavior. A better understanding of factors contributing to the development and maintenance of overweight are crucial for the development of new treatment options for obesity. ;
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