Parental care in childhood and obesity in adulthood: a study among twins.

The purpose of the study was to examine if parental antipathy and neglect during childhood were associated with obesity in adulthood. From the Danish Twin Registry (DTR) 146 adult same-sexed twin pairs discordant for BMI were identified. Criteria for being discordant were that one of the twins should have a BMI between 20 and 25 kg/m(2) (normal weight) and the co-twin a BMI ≥30 kg/m² (obesity).