conditions children to prefer sugary processed foods. he wants parents to start their babies on pureed fruits and vegetables combined with a whole grain cereal instead of white rice. >> the difference between white rice and brown rice is huge. white rice is basically 94% starch. brown rice though is 25% other stuff, proteins and essential fats and minerals and vitamins antioxidants, all kinds of stuff. >> reporter: dr. green launched the white out campaign to rid stores of baby bowls of white rice cereal entirely by next thanksgiving. we asked the number one seller of white rice cereal in the country, gerber, what they think about the campaign. they tell us they're not aware of any scientific study that white rice contributes to childhood obesity and welcome the opportunity to review any relevant scientific data. but not all doctors are convinced. dr. keith ayoob, a pediatric nutritionist, says imprinting in