Methods: Cross-sectional study with 158 mothers lactating adolescents attending the services of primary care of Bucaramanga- Colombia. The instruments used to characterize adolescent mothers and to evaluate the effectiveness of family functionality the family APGAR. Data entered and validated in EpiInfo 6.04d and analyzed in Stata 10.1, to analyze continuous variables, we used measures of central tendency; categorical variables were expressed as proportions. Multivariate analysis described by prevalence ratio and confidence interval of 95%.