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Vision and eating behavior in obese subjects
Britta Barkeling1, Yvonne Linné, Eva Melin
1Obesity Unit, Huddinge University Hospital, S-141 86 Stockholm, Sweden. Britta.Barkeling@medhs.ki.se
Obesity Research
|January 17, 2003
Summary
Obese individuals consumed 24% less food when eating blindfolded, without experiencing reduced fullness. This suggests vision significantly impacts eating behavior and could inform weight management strategies.
Area of Science:
- Behavioral Science
- Obesity Research
- Nutritional Neuroscience
Background:
- Vision plays a role in regulating food intake.
- Understanding factors influencing eating behavior is crucial for obesity management.
Purpose of the Study:
- To investigate the impact of vision on the eating microstructure of obese subjects.
- To determine if removing visual cues affects food consumption and subjective appetite ratings.
Main Methods:
- Eighteen obese subjects consumed a test meal with and without a blindfold.
- Eating behavior microstructure was monitored using a computerized eating monitor (VIKTOR).
- Subjective motivation to eat was assessed using visual analogue scales (VASs) pre- and post-meal.
Main Results:
- Subjects consumed 24% less food when blindfolded (359g vs 472g, p < 0.01).
- No significant differences were observed in subjective appetite ratings (hunger, satiety) between conditions.
- Despite reduced intake, blindfolded subjects did not report feeling less full.
Conclusions:
- Vision is a significant regulator of food consumption in obese individuals.
- Blindfolded eating reduced intake without altering subjective satiety, highlighting the role of visual cues.
- Blindfolded eating may serve as a didactic tool for obesity management, increasing awareness of eating regulation factors.