A new study suggests that eating the same meals repeatedly may be more effective for weight loss than maintaining a varied diet. Researchers from the American Psychological Association and Drexel University found that participants who followed consistent eating routines lost more weight over a 12-week period compared to those with more varied diets.
Core Findings
The study, published in Health Psychology, tracked 112 overweight or obese adults enrolled in a behavioral weight loss program. Participants logged their meals and weighed themselves daily. Those who repeated meals frequently lost an average of 5.9% of their body weight, while those with more varied diets lost 4.3%. The research also noted that greater day-to-day calorie consistency contributed to better weight loss outcomes.
Psychological Benefits
Lead author Dr. Charlotte Hagerman of the Oregon Research Institute explained that routines reduce the mental burden of maintaining a healthy diet. "Creating routines around eating may reduce that burden and make healthy choices feel more automatic," she said. The study also found that participants who frequently reflected on their goals were more likely to stick to their diet plans.
Methodology
Researchers measured dietary repetition by tracking how often participants logged the same foods. Foods logged more than 10 times were considered highly repetitive, while unique entries were counted as varied. Beverages and condiments were excluded to avoid skewing results. The study emphasized that this is a correlation, not a causal relationship, and other factors like motivation and self-discipline may also play a role.
Implications
While nutritionists often recommend dietary variety, this study suggests that consistency may be more effective for weight loss. The findings highlight the psychological benefits of routine in maintaining healthy habits. However, the researchers caution that more research is needed to fully understand the long-term effects.