There is a certain amount of truth to this balancing of the calorie scales. But energy intake is only part of the story of body weight regulation, elements of which remain entirely hidden from most people for their entire lives. The number one secret that most people never appreciate about their unwanted pounds of excess body fat is that it is almost always the result of a prolonged state of hormonal imbalance within the body.
Most of us appreciate the idea that hormones control our daily levels of sexual desire, and that the ability with which we are able to gain muscle is strongly influenced by the levels of certain muscle building hormones - such as the such as the steroids which athletes are prone to abuse for increased performance.
On the other hand you may have some awareness that when the thyroid gland is not working properly we can suffer an increase in body weight. People who have a hard time losing weight are apt to suspect that they are suffering from hypothyroidism, in which the thyroid hormones T3 and T4 ( which play a big part in controlling the overall rate at which food is burned to produce energy) are not produced in the quantities needed to stimulate sufficient energy production. So the net effect is your bodyimmune disfunctions.
But besides the level of thyroid hormones in your body, there are other hormones which also play an important part in the determination of your metabolic rate. These other hormones, which respond to diet and exercise, are much more under your direct control, and can result in weight gain when they become unbalanced in your body, even when your must be rebalanced to burn fat rather than store it.