Safe in some rare diseases and of course as long as its feeding is balanced, the growth of the child is remarkably regular to such an extent that they drew curves which allow to the doctor to follow this growth up to the adulthood: as soon as the child walk, two or three measures in year are enough for the family to prove that everything goes well.

These curves, which are found at the end of the health record, were established from children any different: from a medical point of view, it doesn't much matter to be above or under the average, what counts it is to grow with the same rhythm as the children of the same morphology. It depends especially on genetic factors, but also on progress of our living conditions and surely on our feeding.

The fact that a child is not among the biggest of his class has not consequence as its balance unless it very much worries his parents, what is going to end up unsettling him.