Everything about the number of calories you need to lose weight

Each nutrient has its own character . It is useful in practice to go deeper into the specifics of different nutrients to define subclasses and fix their energy value expressed in calories.
Carbohydrates come in two forms:
Sugars called "simple" to frankly sweet taste.Complex sugar , which are all mealy ... these are mainly starch, which is a long chain of sugars off one by one during digestion .
All carbohydrates burning in the body emit 4 calories per gram.
Lipids or fats are classified according to their unsaturationThere are:
The lipid -rich " saturated fatty acids ' found in meat , dairy products , solid vegetable fat.
Monounsaturated fat content , for example in olive oil ,Lipids rich in polyunsaturated fatty acids contained in the oils and other fatty fish .
Some fatty acids ( components of lipids) are called "essential" because they are essential and can not be manufactured by the body.
All fat burning in the body emit 9 calories per gram.
Proteins are made from meat, fish, ouefs , dairy products, but also by certain plants, they are made up of amino acids (or amino acids) chains.Meat products, egg whites and fish provide all the amino acids useful in easily digestible form .We can immediately note that the absence of a single amino acid affects the proper use of all others.
1 gram of protein releases 4 calories
Vitamins are very numerous and are divided into :Soluble or fat-soluble or they will be found .Water-soluble or water soluble .Minerals and trace elements are also many laa , but others include the iron as the best assimilated is found in meat and calcium which is the main interest of dairy products.
Vitamins and trace elements do not emit calories
Only a complex alchemy allows man to make good use of his power and wanting to live well .This is the noble goal that works by reducing the digestion of food in multiple single nutrients , nutrients have a stable chemical structure that allows them to enter less metabolic pathways use.Skip extremely complex to simple elements recombined in favor of another agency, is the constant of the great cycle of nature.Carbohydrate energy ... every day ... fat energy in the long term protein , build and replace
The normal man has about 10kg of fat, which therefore represent 90,000 calories of energy ... is booked 6 weeks of average expenditure, fat reserve is formed by the excess calories consumed :Form of dietary fat ,Or in the form of sugars that turn into fat through lipogenesis.
All food proteins are amino acids that can be used as such by the cells to manufacture their own proteins formed .Proteins are the building blocks of a good diet , the body contains about 12 kg of proteins, which enter into the constitution of all organs and parts of the blood and lymph .
The metabolism of the major nutrients is branched from three major routes networkG ( carbohydrate) , L ( lipids) , P ( proteins) .The major metabolic pathways may vary in their direction , as are multiple switches .
The body knows how to control the traffic on each of these channels. Most of these controls depend on the secretion of hormones, messengers in the blood , which is the instrument of a permanent dialogue between cells of different organs.
Hormone secretion itself depends nutrients it needs control ... It thus establishes a delicate balance that can adapt cell function to inputs and nutrient losses.
The transition from fed to fasting state illustrates this continuous adaptation . Mechanisms of metabolic regulation in large proportions ensure the adaptation of the organism to food conditions in healthy subjects .