Genetics may also play a role in contributing towards obesity. Children may be more likely to be overweight if one or both of their parents are overweight or obese. As families share food and physical activity habits, children also adopt the habits of their parents. So, children with overweight parents who eat high-calorie foods and are physically inactive will likely become overweight like their parents. On the other hand, if a family adopts healthy dietary and physical activity habits, the child's chances of being overweight or obese are reduced.