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Positive effects of calorie restriction on quality of life and diseases are reported. Intermittent fasting, one of the calorie restriction methods, has been shown to be beneficial for health with many metabolic effects, not just calorie restriction. Preclinical studies show the disease-modifying effects of intermittent fasting in animal models on a wide variety of chronic disorders, including obesity, diabetes, cardiovascular disease, cancers, and neurodegenerative brain diseases. There are very few studies evaluating the effects of intermittent fasting on the immune system, and only TNFα, IL6 and IL10 cytokines were evaluated in these studies to evaluate the immune system. In this study, we aimed to evaluate the conditions of inflammatory markers in peripheral blood before and after intermittent fasting period in overweight volunteers with a Body Mass Index between 25 and 30. Volunteers will have intermittent fasting for 3 weeks, which conforms to the 16-hour fasting and 8-hour meal format.
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In a 1997 article by Weindruch and Sohal, they reported that reducing food availability (calorie restriction) throughout life has significant effects on aging and lifespan in animals. There are many modalities for calorie restriction, one of which is intermittent fasting. Intermittent fasting involves having little or no energy intake during a certain period of the day, then free intake of energy for the rest of the day. Some of the modalities applied in this context can be listed as 12 hours fasting-12 hours eating, 16 hours fasting-8 hours eating, 20 hours fasting-4 hours eating. Studies in animals and humans show that most of the health benefits of intermittent fasting are not just the result of decreased free radical production or weight loss. Instead, intermittent fasting elicits cellular responses that can adapt to improve glucose regulation between and within organs, increase stress resistance, and suppress inflammation. During intermittent fasting, cells activate pathways that increase their defenses against oxidative and metabolic stress and remove or repair damaged molecules.Preclinical studies show the disease-modifying effects of intermittent fasting in animal models on a wide variety of chronic disorders, including obesity, diabetes, cardiovascular disease, cancers, and neurodegenerative brain diseases . Periodic opening and closing of metabolism with intermittent fasting not only provides the ketones necessary for cells to use during the fasting period, but also elicits highly regulated systemic and cellular responses to increase mental and physical performance and disease resistance.
There are very few studies evaluating the effects of intermittent fasting on the immune system, and only TNFα, IL6 and IL10 cytokines were evaluated in these studies to evaluate the immune system. In one of these studies, it was reported that proinflammatory cytokines of TNFα, IL6, which were measured after intermittent fasting for 30 days for 14 hours, decreased significantly.
In this study, the investigators aimed to evaluate the effect of 16-hour fasting and 8-hour intermittent fasting application on overweight volunteers with a Body Mass Index of 25-30 for inflammatory markers in peripheral blood .
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