Breastfeeding during the first 6 months of life, adiposity rebound and overweight/obesity at 8 years of age.

Background: The question of whether breastfeeding protects the child from obesity is a still debated issue; however, the relationship between early adiposity rebound and higher risk of obesity is well known. This study was aimed at evaluating whether breastfeeding (without formula supplement) during the first 6 months of life delays the time of adiposity rebound and consequently reduces the rates of obesity at the age of 8.

Methods: This retrospective cohort study included 1812 children born in Gran Canaria in 2004, with follow-up until they were 8 years of age. Anthropometrical data had been taken during routine visits to the doctor and were extracted from medical record databases. Only children with breastfeeding for the first 6 months of life (173 children) and children without breastfeeding (192 children) were included. Children with mixed feeding and children whose data were not available were excluded.

Results: No body mass index (BMI) differences were found between children with breastfeeding (17.7) or without breastfeeding (17.3) during the first 6 months of life. The percentages of children with normal weight, overweight and obesity were similar in both groups, as well as the age of adiposity rebound breastfeeding 3.61 years; formula 3.64 years). Early adiposity rebound was associated with increased BMI at the age of 8, both in male and female children.

Conclusions: Breastfeeding during the first 6 months of life was not demonstrated to delay the age of the adiposity rebound, in our study.