A recent study conducted by researchers at Johns Hopkins University has challenged the widely held belief in the benefits of intermittent fasting for weight loss. The study, published in Annals of Internal Medicine, found that both time-restricted eating and a regular eating pattern led to similar weight loss results, suggesting that total calorie intake may be more important than meal timing.
The study involved 41 adults with obesity and prediabetes, who were randomly assigned to either a TRE group with a 10-hour eating window or a regular eating pattern for 12 weeks. The researchers provided prepared meals with identical macronutrient and micronutrient compositions to both groups, ensuring that calorie intake was held constant.
After 12 weeks, both groups lost approximately the same amount of weight, and there were no significant differences in fasting glucose, waist circumference, blood pressure, or lipid levels. This finding suggests that the weight loss observed in individuals practicing TRE may be primarily due to a reduction in calorie intake rather than the timing of meals.
According to the researchers, the study challenges the popularity of intermittent fasting and suggests that overall calorie consumption may be more important than meal timing for weight loss. The authors note that if TRE interventions induce weight loss, it is likely in part due to a reduction in calories, and therefore, clinicians can counsel patients that TRE may help them lose weight by decreasing their caloric intake.
While TRE was not found to be more effective for weight loss than a regular eating pattern, an accompanying editorial from the University of Illinois Chicago suggests that it may be easier for patients to follow because it allows them to continue consuming familiar foods. This simplified approach to treating obesity could be beneficial for patients who struggle with calorie counting.
The study’s findings challenge the myth surrounding intermittent fasting and highlight the importance of overall calorie management in weight loss efforts. However, it’s important to note that individual responses to dietary interventions may vary, and consultation with healthcare professionals is recommended for personalized guidance.
Sources:
https://www.acpjournals.org/doi/10.7326/M23-3132
https://hub.jhu.edu/2024/04/22/study-challenges-intermittent-fasting/
