Evaluation of a Multicomponent Early Intervention for Childhood Obesity Prevention in Vulnerable Families

Inclusion Criteria: * Mothers and/or fathers aged 18 years or older. * Primary caregivers of a healthy child aged 6 months to 3 years, born at term (≥37 weeks of gestation). * At least one parent with overweight or obesity (as defined by BMI criteria). * Families in a situation of vulnerability, defined as meeting ≥1 of the following criteria: (1) Low educational level of at least one parent (≤ lower secondary education or equivalent); (2) Precarious employment situation during the past year, (3) Perceived financial difficulties during the past year; (4) Insecure or unstable housing conditions; (5) Single-parent family or prolonged absence of one of the primary caregivers; (6) Recent immigration (≤10 years) without a stable support network or with language barriers. Exclusion Criteria: * Parents of a child aged 6 months to 3 years with low birth weight (\<2500 g) * Parents of a child aged 6 months to 3 years from a multiple birth (e.g., twins, triplets) * Parents/caregivers of a child aged 6 months to 3 years with congenital conditions, chronic diseases, or severe disabilities that may affect feeding, growth, or participation in the study * Parents or caregivers with severe physical or mental health conditions that would limit their ability to participate in the intervention or assessments * Families planning to move out of the study area during the study period