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Control of food intake. A physiologically complex, motivated behavioral system
1Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, USA.
Endocrinology and Metabolism Clinics of North America
|December 1, 1996
Summary
Understanding food intake control requires more than just physiological signals. Learning and circadian rhythms significantly influence feeding behavior, impacting hunger, satiation, and satiety signals.
Area of Science:
- Physiology
- Behavioral Science
- Neuroscience
Background:
- Food intake is a complex, motivated behavior.
- Progress has been made in identifying signals for satiation and satiety.
- Hunger signals remain challenging to pinpoint.
Purpose of the Study:
- To examine the physiological control of food intake.
- To explore factors beyond basic physiological signals influencing feeding behavior.
- To provide a comprehensive model of feeding behavior.
Main Methods:
- Review of physiological mechanisms controlling food intake.
- Analysis of sensory feedback, gastrointestinal distension, and nutrient signaling.
- Inclusion of learned responses and circadian influences in models.
Main Results:
- Physiological signals include sensory feedback, gut distension, nutrient metabolism, and hormones.
- Feeding behavior is modulated by learned responses.
- Circadian rhythms can override basic hunger and satiety signals.
Conclusions:
- Current physiological models of food intake are incomplete.
- Learned behaviors and circadian rhythms are critical modulators of feeding.
- A holistic approach is needed to fully understand food intake regulation.