Intermittent fasting is leaving a long period of time between the last meal of the day and the first meal of the next day. During the fasting period, the body consumes the calories furnished by the meal and tends to consume the stored fat in its quest of energy. This obviously contributes to weight loss.
In addition, insulin levels are to their lowest during the fasting period, which helps regulate several hormones. It was proven for example that intermitent fasting helped women with polycystic ovaries.
Now the reason why some people see results faster than others, beside interindividual variability, is the composition of the meals. Intermittent fasting provides you with a pattern to follow. It puts order into your diet. If your diet is full of calories you will still provide your body with some extra calories to convert into fat.
The rule says, the less your calories intake is, the more fat you will burn. However, you should make sure not to stand on the verge of death. This says, it is better to discuss this step with a dietitian especially if you already have some health issues.
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