Objective: To determine the relationship between the history of exclusive breastfeeding with the incidence of obesity in children aged 4-6 years. Method: This study used a cross-sectional design with a number of research subjects were 60 children, or respectively 20 children in each kindergarten / early childhood. Determination of obesity with a Z-score based on BMI for age. History of exclusive breastfeeding data obtained through interviews. Result: Total sample involved in this study were 60 children. Most samples of male sex with as much as 37 persons (61.7%), aged 4 and 5 years respectively by 27 persons (45%). Old breastfeeding is born-most 3 months were 28 children (46.7%), as well as the intensity of mostly non-exclusive breastfeeding as many as 37 persons (61.7%). Conclusion: In this study, the statistical test result is got value p = 0.047 for duration of breastfeeding and p = 0.000 for intensity of breastfeeding which indicates that there is a relationship between a history of exclusive breastfeeding and obesity in children aged 4-6 years.

Keyword: Obesity, duration of breastfeeding, intensity of breastfeeding