Satiety can be defined as the ‘feeling of fullness’ after eating a meal. For example, have you ever wondered how you fill up with a bowl of oat meal but even three doughnuts leave you feeling hungry? The reason is the comparative satiety levels from the consumption of these foods.
Let us consider in more detail what happens during a meal. At the beginning, eating is rapid, with few pauses between bites. As the meal progresses, eating slows, there are more pauses between bites, and other behaviours such as fidgeting, grooming, or resting increase. A state of satiety is reached when the meal ends. This state is usually associated with a pleasant sensation of fullness or satisfaction. However, unpleasant sensations of nausea and bloating can be associated with satiety following excessive food intake. Of interest is that even when eating has stopped altogether, the introduction of a new food can restart eating.
Genes are involved in the regulation of metabolic rate and energy expenditure which in turn influences body fat accumulation. Some individuals carrying a variation in this gene tend to have “Difficulty in Feeling Full” and are likely to overeat, and overeating in the long run in turn can increase the likelihood for health conditions like obesity.
A genetic test to identify this mutation in an individual followed by appropriate dietary recommendations to overcome this difficulty in feeling full (if mutation is present) will help an individual attain optimal satiety levels.