Which fasting is better?
Regular calorie reduction is better for weight loss than interval fasting
Georgy Golovanov, Hi-tech+
The results of a clinical trial conducted by UK scientists have called into question the effectiveness of popular diets based on interval fasting. It turned out that a simple reduction in daily calorie intake is better for getting rid of excess weight. In addition, fasting can lead to a significant decrease in muscle mass.
Interval fasting is a popular dietary phenomenon that takes various forms, from limiting food intake to a certain time of day (for example, eight hours a day) to completely refusing food during the day once or twice a week. Scientific evidence of the pros and cons of this approach has not yet been sufficiently collected. It is not yet possible to say with certainty which of these methods helps to lose weight and how it affects the overall metabolic health of the body.
Specialists from The University of Bath decided to find out whether fasting without calorie restriction differs from a regular diet, according to a press release of Intermittent fasting ‘no magic bullet for weight loss' says a new study. They divided healthy volunteers without excess weight into three groups: the control group consumed about 1,500 calories a day, the second starved every other day and ate about 3,000 calories a day, the third starved every other day, but ate the recommended number of calories – about 2,000.
The result showed that the representatives of the third group did not experience any significant weight loss after four weeks. While the second group lost an average of 1.6 kg. But the participants from the control group lost the most weight – 1.9 kg in a month without hunger strikes.
Perhaps more importantly, about half of the weight lost in the second group is muscle tissue. At the same time, the weight of the control group decreased almost exclusively due to fat. There is an assumption that the loss of muscle mass occurred due to reduced physical activity during the days of fasting. The researchers note that the energy savings may have been subconscious, and the participants themselves may not have suspected that they began to move less.
Article by Templeman et al. A randomized controlled trial to isolate the effects of fasting and energy restriction on weight loss and metabolic health in lean adults is published in the journal Science Translational Medicine – VM.
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