[nuguy]

I'm guessing you are getting there age at there birthday, not relly of course, do you have the year of their birth in the birthday field for their contact info?

Open contacts

open one of the contacts in question I.e. mom

scroll down to the birthday field and verify the accuracy especially the year.

Assuming I am right, and you had to make a correction, now you will need to synch up again. and it may take a few minutes for the change to show up on the today screen.