
If you’re trying to lose weight, you’ve probably come across many diet and workout plans. The internet is full of different weight loss strategies, but how do you know which one is right for you? Two of the most popular methods are intermittent fasting and calorie deficit diets. But which one works better?
Scientists have finally found the answer! A new study from the University of Colorado School of Medicine, published in the Annals of Internal Medicine, shows that intermittent fasting leads to more weight loss compared to a traditional calorie deficit diet.

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What Did the Study Find?
The researchers focused on the 4:3 intermittent fasting plan, where people eat normally for four days a week and follow strict calorie restrictions for the other three days. At the end of one year, those who followed this plan lost an average of 7.6% of their body weight. In comparison, those who followed a daily calorie deficit diet lost only 5% of their weight.
Previous studies had suggested that both diets give similar results, but this new study showed a clear advantage for intermittent fasting. Dr. Victoria Catenacci, one of the lead researchers, called the findings “surprising and exciting.” She also mentioned that intermittent fasting could be a great option for people who struggle with calorie counting every day.
How Was the Study Conducted?
The study included 165 adults who were overweight or obese. They were divided into two groups:
- Intermittent Fasting (4:3 Plan): These participants fasted on three nonconsecutive days each week, reducing their calorie intake by 80% on those days. On the other four days, they could eat freely but were encouraged to make healthy choices.
- Calorie Deficit Diet: These participants followed a daily calorie restriction designed to reduce their energy intake by 34.3%.
Both groups were given free gym memberships and encouraged to exercise for 300 minutes per week. They also received group support and guidance on healthy eating habits.
Results and Health Benefits
By the end of the study:
- People in the intermittent fasting group lost 7.6% of their body weight, while those in the calorie deficit group lost 5%.
- 58% of the intermittent fasting group lost at least 5% of their body weight, compared to 47% in the calorie deficit group.
- The intermittent fasting group also showed improvements in blood pressure, cholesterol levels, and blood sugar levels.
Why Choose Intermittent Fasting?
One of the biggest advantages of intermittent fasting is that it doesn’t require counting calories every day. It provides a flexible and evidence-based alternative for those who find daily calorie restriction difficult.
So, if you’re struggling with a traditional diet, intermittent fasting might be a better and easier option to help you lose weight and improve your health!