[Assessment and standardization of the body mass index in French males aged 18-59 years].

This study of the corpulence of 54,360 French men aged from 18 to 59 years assessed the existence of a biological constant between height and weight. We observed a linear relation that links height to the mean weights corresponding to a fixed height. This new relationship informs us on the excess or the deficit of weight of each man and allows comparisons between body mass index in men, even if they have different heights or ages.