Fasting for weight loss is not only an unhealthy and dangerous thing for your body's nutritional health, but often these diets fail to accomplish any type of sustainable weight loss. The metabolism adjusts and keeps into starvation or famine mode and some people not only regain the weight they lost, but might regain more. Because your metabolism shifts to sustain on fewer calories, the weight loss stops and what weight loss there is may be coming from muscle cells since the body tends to hold onto fat cells to sustain itself during times of famine. Three main disadvantages of fasting for weight loss are:
1. Fasting for Weight Loss Starves the Body of Necessary Nutrients:
By fasting, you are taking in hardly calories and what liquid calories you may be taking in run through the system so quickly, that your body hardly has time to draw what few nutrients might be consumed. While some fasting diets refer to themselves as a colon cleanse, they actually cause the body to flush fat cells and toxins into the system as needed while not replenishing any nutrients. If you continue fasting for weight loss, you would eventually become mal-nutritioned and dehydrated. After your metabolism adjusts, and thinks the body is starving, it will conserve the calories it burns and you may feel tired, like in the caveman days, where long periods of famine may be encountered, the metabolism kicks into a survival mode, and the weight loss may plateau.
2. Fasting for Weight Loss May Be Burning Muscle Tissue and Holding Fat Cells:
Whether it's a juice diet or diet pill supplement, they are geared towards immediate weight loss, and are a starvation type of calorie intake. Because the body holds onto fat stores, it may start causing muscle loss. Initially fasting for weight loss may show a rapid weight loss, but because muscle weighs more than fat, the rapid loss could be due to muscle fiber not getting enough nutrients, since muscle is primarily made from proteins. Since a fasting diet does not normally involve any measurable amount of nutrients, including protein, the weight loss may not be from burning fat. For any weight loss to be long term, it needs to be based on a balanced diet, with exercise, and consist of a variety of foods that have some nutritional value. Since muscles burn more calories than fat in a resting state, muscle is needed for nutritional weight loss and metabolism.
3. Fasting for Weight Loss is Not a Long Term Diet Solution:
Most people cannot continue to fast for any amount of time, and your metabolism will shift to sustaining itself on fewer calories. In fact, some people find that they gain back the weight they lost plus some, when they quit fasting. When you eat a diet of nutritious, low calorie foods that contain protein for muscle growth, your body is able to store nutrients for muscle bulk and healthy vital organs. Any quick weight loss normally is not a sustainable one, so the most effective long term diet solution is one that consists of the foods your body needs, but takes in fewer calories than you burn.