Want to keep your child from junk food snacks? One way is to limit how much screen time he has. Researchers at Lucile Packard Children's Hospital and Stanford's School of Medicine recently found that the more time children spend in front of the screen, the more requests they made for food or drinks that were advertised.

In spite of increasing parental concerns about high-calorie, nutritionally poor foods being pedaled to kids on television, movies and video games - marketers continue to use this advertising tool - because they know it works; parents get worn down with constant pleas for special foods and drinks and often give in.

You can make your life easier by helping your child to tune out - before this happens.