Why are the babies of the diabetic pregnant women so big?

When a small child asks you where from the babies come, you remain a bit flabbergasted thinking how you are going to explain it to him. And when he feels like asking why the mom of Fulanito, who is diabetic, has had a child taaaan big, you arch an eyebrow again and wonder also why.
Let's revise little physiology of the pregnancy. On having remained a pregnant woman, a few "infrastructures" form to support the comfortable, warm baby and good fed inside the womb. One of the main frames for all this is the afterbirth, across which a lot of nutrients come to him. They not all come to him from the same way and there are some of them that do not come to him, like the insulin, which prepares the fetus for itself. A diabetic woman does not have proper insulin production or this one is very scarce, so that when it consumes carbohydrates and sugar is not taken of rapid form not effectively to the cells and the "larders" of these elements in the organism, for example the liver. To this it is necessary to add him that during the first trimester of the pregnancy the body of the gestante is regulated in such a way that there is more glucose in blood, which spreads across the afterbirth up to the fetus and is one of his basic sustenances. The fetus prepares insulin as the quantity of glucose that is coming to him.
And where do you take us with all this glucose roll for above, for below, insulin of the mother, of the child and etc? Since to that the insulin has other functions apart from that to facilitate the storage of the glucose. It facilitates the synthesis and the proteins deposit, working together with the hormone of the growth to stimulate the growth (cost the redundancy), being the insulin the principal hormone in charge of the increase of size and weight of the baby. This way we meet a diabetic woman with a better or worse control of his glycemia and a fetus that not of to produce insulin because it is receiving enough glucose, putting itself really hermosote.
Another day we speak about the test of O'Sullivan that is done to the pregnant women to discard the diabetes gestacional :)