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Appetite regulation and energy balance
Charlotte Erlanson-Albertsson1
1Department of Experimental Medicine, University of Lund, Lund, Sweden. charlotte.erlanson-albertsson@med.lu.se
Acta Paediatrica (Oslo, Norway : 1992). Supplement
|September 24, 2005
Summary
Highly palatable foods, rich in sucrose and fat, can disrupt natural hunger and satiety signals. Limiting these foods in children is recommended due to a lack of biological feedback mechanisms.
Area of Science:
- Physiology
- Neuroscience
- Nutrition Science
Background:
- Eating behavior is regulated by complex hunger and satiety signals.
- Hunger signals, including ghrelin and neuropeptide Y, originate from the gastrointestinal tract and hypothalamus.
- Satiety signals emerge from the intestinal tract, adipose tissue, and liver post-meal.
Purpose of the Study:
- To explore the physiological mechanisms governing eating behavior.
- To investigate the impact of palatable foods on hunger and satiety signals.
- To understand the implications for overeating and regulatory feedback.
Main Methods:
- Review of physiological signaling pathways involved in appetite regulation.
- Analysis of the effects of sucrose and fat on hormonal and neural signals.
- Examination of the reward system's role in food intake.
Main Results:
- Hunger signals activate food seeking and consumption.
- Satiety signals initiate eating termination approximately 30 minutes after starting a meal.
- Palatable foods (sucrose, fat) weaken satiety signals and enhance hunger signals, potentially overriding biological controls.
Conclusions:
- Overeating is exacerbated by easy access to palatable foods.
- Restricting sucrose- and fat-rich foods is advised for children.
- Children may lack biological feedback mechanisms to regulate intake of these products.