As mentioned already, baby rice and other rice products contain arsenic, and increased arsenic exposure may increase the risk of certain cancer. (newkidscenter.com)
And based on the U.S. Food and Drug Administration's data on rice, just one serving of rice cereal or many other rice products could put a baby close to that limit. (thetoddle.com)
Note: Experts at Consumer Reports recently found worrisome levels of arsenic in rice milk (and other rice products). (babycenter.com)