Why go hungry from time to time more useful than ever to cut calories
Health / / December 19, 2019
Control portion sizes and limiting calorie intake - the most common method of losing weight. However, as it turned out, this method does not bring the desired results.
According to the conducted research in 2015Probability of an Obese Person Attaining Normal Body Weight: Cohort Study Using Electronic Health Records. , Calorie restriction helps to lose weight from 1 210 men and 1 124 women. Why is this method does not work? According to nutritionists, it is not our lack of willpower, and in the metabolism slowing down.
Calorie restriction slows metabolism, and fasting - no
Diets based on calorie restriction, are effective only for a short time until your metabolism begins to slow down in response to a lack of nutrients. restricting calorie consumptionWe literally causes the body to "switch off". In this state, the weight really reduced, but as soon as it becomes less calories they intake, weight returned.
Short-term fasting does not have such an effect. It triggers hormonal adaptations that do not occur in the simple calorie restriction. We have reduced insulin levels
Alternate-day fasting in nonobese subjects: effects on body weight, body composition, and energy metabolism. Increases norepinephrine levels (which accelerates metabolism) and growth hormone somatotropin, which helps maintain muscle massA randomized pilot study comparing zero-calorie alternate-day fasting to daily caloric restriction in adults with obesity. .During fasting first burned glycogen stored in the liver. When he finishes, starts to burn fat. And if the body enough fuel, the metabolism does not slow down.
The body gets used to a limited number of calories and do not burn the fat
In 2016, scientists compared the effect on people suffering from obesity, fasting every other day and daily calorie restrictionA randomized pilot study comparing zero-calorie alternate-day fasting to daily caloric restriction in adults with obesity. . The experiment lasted 24 weeks, during which the participants of the first group ate 400 calories less than their normal standards, and the participants of the second fed as usual, but the hungry through the day.
The researchers concluded that short-term starvation - a safe and effective technique.
Although in terms of total weight loss starvation only slightly superior to a diet, while it lost nearly twice as much fat trunk.
In addition, the diet usually do not take into account is the biological phenomenon as homeostasis - the body's ability to adapt to a changing environment.
Our eyes adapt, wherever we are, in bright sunlight or in darkness. The same is true with weight loss during caloric restriction. The body adapts to the new conditions, slowing metabolism. And when we go back to the old norm of calories, we gain weight again. Therefore, intermittent fasting diet and more efficiently.