Hey Jenna, Raddichio is in the chicory family and unfortunately it does have a higher count of calcium. I still give a little of it to my girls though, they love it as well. Each day they get 1 calcium rich item in a very small amount (parsley, kale, or radicchio) and so far we have had no problems. Lisa D. and the girls Kisseis, Erytheia, Maia, and Calypso