It is nothing else but impossible. Diet could not be ruined. There may be noticeable shifts in the body composition that is regarded as one of the things people refer to when they talk about their metabolism being "ruined" by dieting but this is only a natural component the so-called “burning of calories.”
If one hopes to bring his or her metabolic rate up and soaring, one of the best things you can do is regain some of that lost muscle by adding weight training to your routine. With this, metabolism would be faster and attaining the lighter weight you have now is easier.
In the dieting world, this phenomenon of gain now, lose weight later is called “yo-yo” effect. There are specific positive actions you can make in order to work with any metabolic concern you may have as a result of your dieting history. Every person differs, so have the freedom and sensibility to gauge your needs and put into consideration all the factors especially how your metabolism is like.
Most people experiencing the trouble of the yo-yo effect have been trying to lose weight using a low-fat diet. However, this is not the correct approach. Low-fat diets are generally high in carbohydrate diets, and they just have this imaginary guarantee that your body will consistently give high levels of insulin. The fact is: the body does not burn fat when there are high levels of insulin.
The thought of metabolism being destroyed is of falsity. Metabolism is by fact, a phenomenon that starts in the womb and ends in the tomb. We just need to take good care of our health and see to it that our metabolic rate or metabolism as a whole is not unknown to us.
Through it, we could take strides to a life of good health and satisfaction. And we must be cautious in dieting or else…