[Effect of a healthy eating intervention on compliance with dietary recommendations in the first year of life: a randomized clinical trial with adolescent mothers and maternal grandmothers]

Abstract

The objective was to evaluate the effect of a healthy eating intervention targeting adolescent mothers and maternal grandmothers on compliance with dietary recommendations in the first year of life. This was a randomized clinical trial involving 320 adolescent mothers, their infants, and 169 maternal grandmothers (when the three generations were living together), randomly assigned to the intervention versus control group. The intervention consisted of six counseling sessions on healthy feeding during the child's first year of life, the first of which held at the maternity ward and the others at 7, 15, 30, 60, and 120 days, at the homes. Information on the infant's diet was obtained monthly during the first 6 months and then every 2 months until the child reached 12 months of age, using a Food Frequency Questionnaire, in addition to questions on mealtimes, consistency of the foods, hygiene, preparation of meals, conservation of foods, and the mother's or grandmother's approach to the child's diet in the presence of illness. The outcome was defined as meeting the Ten Steps to a Healthy Diet: A Food Guide for Children Under Two Years Old, assessed by a score. The mean sum of the scores for each step obtained in the intervention group was higher than in the control group; the intervention doubled the odds of the total score being greater than or equal to the median. Living with grandmother did not influence the score either in the intervention group or the control group. The proposed intervention had a positive effect on meeting the Ten Steps, independently of participation by the maternal grandmother, showing that educational interventions can improve quality of diet for children in the first year of life.