Pediatric obesity is a growing health concern afflicting the United States. The treatment for pediatric obesity, as a health epidemic, costs billions of dollars to our nation, leaving providers and researchers searching for effective and sustainable ways to better manage the biological, psychological, and social health of individuals and families. While many assessments and interventions continue to emerge, researchers have predominately focused on intra-individual concerns among white non-Hispanic populations. This quantitative study was grounded in a relational theory (attachment theory), with a dyadic and primarily Hispanic sample. Evidence from our study supported that child attachment predicted child obesogenic behavior and that this relationship was mediated by child self-regulation. Children with insecure attachments had more obesogenic behaviors and lower self-regulation of eating than those with secure attachments. Family therapists should be on the frontlines of relational research and clinical interventions that interface with biopsychosocial health across diverse cultures and families.