On results the analysis of physical development new-born their adaptation possibilities were determined. These information was utilized for confirmation of nonspecific resistance of organism of children of first-year of life. In the exhibited district adaptation possibilities of organism go down for children, what the indexes of morbidity testify to: for anomaly RR=3,36 (95% CI 2,55-4,42), endo-crine illnesses of RR=3,08 (95% Si 2,33-4,07), illnesses of blood of RR=1,58 (95% Si 1,21-2,06) and infectious diseases of RR=1,34 (95% Si 1,08-1,65) as compared to a control district. The percent of children which are often ill by comparison to a control district is increased in the exhibited district, ð<0,001. There is conformity to the law of birth of babies with surplus mass of body in the exhibited district, which is saved during first-year of life, ð<0,001.