Which diet works better: fasting sometimes or eating less every day?
Is isocaloric intermittent fasting superior to calorie restriction? A systematic review and meta-analysis of RCTs.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists compared two diets with the same calorie levels: one where people eat normally on some days and fast on others (intermittent fasting), and another where people eat a bit less every day (calorie restriction). They looked at weight, energy, and health markers.
Surprising Findings
Calorie restriction causes less hunger and fatigue than intermittent fasting, despite equal calorie intake.
Many believe fasting helps control appetite over time, but this shows the opposite — people felt hungrier and more tired on IF.
Practical Takeaways
Choose intermittent fasting if your goal is reducing belly fat and improving insulin sensitivity over time.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists compared two diets with the same calorie levels: one where people eat normally on some days and fast on others (intermittent fasting), and another where people eat a bit less every day (calorie restriction). They looked at weight, energy, and health markers.
Surprising Findings
Calorie restriction causes less hunger and fatigue than intermittent fasting, despite equal calorie intake.
Many believe fasting helps control appetite over time, but this shows the opposite — people felt hungrier and more tired on IF.
Practical Takeaways
Choose intermittent fasting if your goal is reducing belly fat and improving insulin sensitivity over time.
Publication
Journal
Nutrition, metabolism, and cardiovascular diseases : NMCD
Year
2024
Authors
M. Hamsho, W. Shkorfu, Y. Ranneh, Abdulmannan Fadel
Related Content
Claims (5)
The main reason intermittent fasting might be better than cutting calories all the time is that people find it easier to stick with, not because it boosts metabolism more.
For older adults, going without food on certain days (but eating the same total calories) might help lose body fat and lower inflammation faster than just eating fewer calories every day — at least at first — but that doesn’t always mean better long-term health.
Skipping meals on a regular schedule, without cutting calories, seems to shrink belly fat and improve blood‑sugar markers more than just eating fewer calories.
Eating fewer calories each day seems to make adults feel less hungry and less tired than doing the same amount of calories in an intermittent‑fasting pattern, so it might be easier for some people.
This finding is from the abstract summary - full study details were not available. It means that while intermittent fasting can help with weight and metabolism, it doesn't work better than just eating fewer calories every day when comparing equal calorie levels.