There is so much information out there about how reducing the amount of food you eat will make you live forever. However, most of those studies have been done on animals. The most recent study done on humans had them reduce their calorie intake by 14% for 2 years. At the end of that time, the Thymus gland became less fatty which is significant because it is important for immune system function. Exercise is important with calorie restriction because a lack of it can lead to a lowered aerobic capacity and decreased bone density. Long-term sustainability is important with any new diet so aiming for 15 to 20% calorie restriction is a good goal. Higher calorie restrictions can lead to deficiencies and binging behavior. Treat your healthy food intake like a marathon, not a sprint!
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