Putting an old wives' tale to rest, Dr. Karp emphatically says that rice cereal does not help a baby sleep longer. "When you look at it, why should it help?" he says. "Why would giving eight ounces of milk that's got a lot of fat and protein not help a baby sleep, but giving them one to two teaspoons of rice starch help them sleep? I mean, it's not quick-drying cement. It really goes through them just as quickly."
Source: Flickr user Philippe Put