There is growing agreement among experts that an obesogenic environment, which encourage excess food intake and idealizes thinness, plays a crucial role in the epidemic of childhood obesity and eating disorders. Because parents provide a child's contextual environment, they should be considered key players in interventions aimed at preventing or treating weight-related problems. Parenting style and feeding style are crucial factors in fostering healthy lifestyle and awareness of internal hunger and satiety cues and de-emphasizing thinness. Effective interventions for prevention and treatment of weight-related problems should be approached from a health-centered rather than a weight-centered perspective, with the parents as central agents of change. This paper reviews the environmental risk factors and parents' role in the prevention and treatment of children's weight-related problems.