Anyone, who once tried to lose weight with a low-calorie diet, knows that this diet is very effective, but at the beginning only, and, unfortunately, it is practically impossible to keep the results achieved. In many cases the weight returns fast after quitting the diet.
Why it happens?
Daily intake of a man is equal to about 2,500-2,800 calories. With the low-calorie diet we should decrease amount of consumed calories to lose weight. For example, if we decrease our intake to 1,900-2,000, we will create a deficiency of 600 calories. It is logical that our organization, which gets used to receive 2,500-2,800 calories, suffers from that deficiency of calories and will try to compensate it with its own stock, in particular with the body fat. So decrease of the amount of calories inevitably leads to weight loss.
Unfortunately at some moment (individually for each man) the process of further weight loss comes to its end in spite of strict following to the diet. Why it happens? After our organism has began to get only 1,900-2,200 a day, it adapts to that intake and uses it more effectively, as the result your weight becomes stable again. Then things go from bad to worse. We stoically stick to the diet, but our weight is going up. Terrible! We eat less but our weight grows.
What is the reason?
It is quite simple. Limitation in our ration has triggered survival system of our organism. It gets used to decrease in energy supply and balances its consumption with the received energy. Even if we decrease intake for other 300 calories a day, our organization will adapt to it as well. Undernourishment of the organism raises its resistance to the process.
If you ever tried a low-calorie diet, you know perfectly well that any small deviation from it, such as the Thanksgiving Day, can inflation gain of 4-7 lb in a single day, to lose which you have spent several weeks. If you miss one meal, your organism falls in panic. And you can be sure that next meal it will make up for the missed energy and it makes stock in any case.
The low-calorie diet has three consecutive stages: weight loss, stabilization of the weight and restoration of the weight. While every next attempt to lose weight with the low-calorie diet will be less effective than the previous one. You remember that your weight is recorded in your genes, do not you?
Michele Montignac, a famous nutritionist, in his books pointed at the above mentioned shortcomings of the low-calorie diets. I am not going to dispute opinion of that prominent international executive for US pharmaceutical industry. The only remark is about his hereditary obesity: he followed his father and suffered from excess weight in his youth. It suggests that he developed his famous method for people suffering from obesity and for them only.
As for me, I have no “bad” heredity and I have experience of my own with a low-calorie diet. It can not be defined either success or failure. I did not jump to the diet like into the cold river, but reduced the amount of calories gradually. In the first three months I lost 26 lb. It exceeded my expectations, and I raised calories in my meals. The process went slower, practically, the weight remained at the same level. There were days when I earned even 3 lb, but it was nothing, compared with lost 26. So, keeping a reasonable low-calorie diet (without hunger faining) I kept my weight for almost 2 years. If I exceeded the amount of calories one day, the next one was a fast day.
I should note that any low-calorie diet requires strong self-discipline. Literally, before you open your mouth you have to calculate how many calories you are going to put into it. Further developments in my life warned me of keeping the diet and my earlier weight, which I almost forgot about, returned in less than 6 weeks. Alas and alack!
In any case if you decide to follow this path of fight with excess of your weight, I wish you patience and willpower, patience in calculation of calories and willpower to keep the diet. You should remember that the organism of every man is strictly individual. You should try and see results to make a conclusion on a diet. The most effective diet is a reasonable diet (here I agree with Mo. Montignac) even if it goes about low-calorie diet. Do not look around, but listen to your organism only. If a diet helped one of your friends, it does not mean that it will be effective for you.