They have already told us in the school's natural and chemistry lessons: energy has not been destroyed, it has been transformed. So, when we lose weight, where does that energy go in the form of fat?
That was the question she sent to 150 health professionals, including doctors, dietitians and nutritionists – Professor Andrew J Brown and researcher Ruben Meerman, from the University of South Wales, in Sydney, Australia.
And the answer that they received surprised them in an unsatisfactory way.
98% of the respondents gave the wrong answer. That is, only three of the 150 experts were able to answer correctly.
Most of them were inclined to say that the kilos that we lose are being converted into another type of energy: heat. This is physically impossible, the researchers explain, because it is contrary to the laws of conservation of matter.
The doctors were surprised that, despite the fact that obesity is a major health risk, very few health professionals responded correctly.
Others answered that fat becomes muscle mass, something that can not be guaranteed, and some said that we remove it in the form of feces when we go to the bathroom.
But nothing is further from reality.
Given the "surprising ignorance and confusion about the metabolic process of weight loss", both scientists who specialized in biomolecular processes and biotechnology, publicized the anecdote and true answer in the British Medical Journal.
And it is that the fat that we eliminate becomes carbon dioxide and water. The CO2 is exhaled and the water goes to the circulatory system until we eliminate it in the form of urine and sweat.
In fact, almost everything we eat comes from our lungs. Experts say that all carbohydrates and almost all the fat we consume are converted into CO2 and H2O. Also alcohol.
Hyperventilation is not the solution to lose weight, because it brings risks to your health.
The same thing happens with proteins, although some are converted into urea and other solids that we eliminate through urine and sweat.
The only type of food that reaches our colon intact and is eliminated when we go to the bathroom is the dietary fiber that contains foods such as corn, wheat and other grains.
Breathing out a lot, solution for the extra kilos & # 39; s?
If the fat is eliminated via the lungs, will we be able to lose those extra kilos by increasing our breathing?
No, warn doctors Meerman and Brown who remember that hyperventilation can cause dizziness and even make us unconscious.
So the only healthy way to lose the fat that is left is to reduce the calories we eat on the one hand and to consciously increase the amount of carbon dioxide by moving the muscles, which increases our physical activity.
So there is no easy way to breathe to lose weight, but rather the traditional recipe: to cause a calorie deficit that spends more calories than you eat. (I)