T.M.
We had this problem too and it wasn't from an unhealthy diet.. my daughter drank more than 64 oz of water daily and ate tons of fruits and veggies (specifically apples and grapes) which are supposed to help with going. We had an x-ray done as well because her belly protruded and they saw that she was full of poop, her colon was backed up. We'd done probiotics, prune juice, cod liver oil, metamucil (pink lemondae flavor) and nothing worked... she was put on miralax and has been on it for the past 2 years and her body is soooooo dependent on it, if she misses a dose we pay BIG-time! Recently, we went to a chinese herbalist in China town Dr. Lisa Lau and she gave us some children's tea called "seven herbal tea drink" and for the past 2 weeks she hasn't had her doses of miralax, this tea seems to be working wonders, she has been going 2-3 times daily and she doesn't go like that with the miralax. Hope this helps. I hate to see children in that pain.