Poor diets lead to weight problems, and may increase cancer risk. Cancers may develop over a long period of time, with some possibly initiating in childhood. Therefore, promoting healthy diets and preventing excess weight gain during childhood could be cancer protective. Families influence children's dietary behaviors by their actions and controlling the home food environment. The internet provides family access to interventions with the convenience of the home. An eight-session interactive web-based program promoting a healthy home food environment for African-American families with 9-12 year old daughters (Family Eats) was previously developed and tested. This study tests whether the Family Eats web program improves diet and weight outcomes among 320 African-American families with 8-12 year old children. This important study will pioneer a new channel for behavior change intervention with African-American families and holds the promise of reaching large numbers of children and their families, enabling all to adopt healthy eating behaviors and achieve energy balance and reduce cancer risks.