Psychological effects of dieting

Area of Science:

• Psychology
• Nutrition Science
• Behavioral Science

Background:

• Understanding the psychological impact of calorie restriction is crucial for managing weight and eating behaviors.
• Previous research indicates potential mood alterations during dieting, but cognitive effects require further investigation.

Purpose of the Study:

• To examine the effects of a short-term calorie-restricted diet on mood and eating cognitions in normal-weight adults.
• To identify any potential sex differences in response to dietary changes.

Main Methods:

• A controlled study involving 14 normal-weight participants (7 men, 7 women).
• Daily visual analogue scales were used to assess mood and eating cognitions over a two-week baseline and a two-week diet period.
• Participants underwent a calorie-restricted diet during the intervention phase.

Main Results:

• No significant changes in mood were reported during the calorie-restricted diet compared to baseline.
• Significant increases in food preoccupation and eating urges were observed during the diet.
• Participants reported a greater likelihood of feeling out of control of their eating while on the diet.
• No significant sex differences were found in mood or eating cognition changes.

Conclusions:

• Short-term calorie restriction primarily impacts eating cognitions, leading to increased preoccupation and loss of control over eating.
• Mood remains stable, and there are no discernible sex differences in these cognitive responses to dieting.
• Findings suggest that cognitive strategies may be important for managing eating behavior during calorie-restricted diets.