As far as I know the crohns diminishes the vitamins in the body and doesnt let them absorb, thats why most of us take vitamin supplements of some kind, also the medications that we are on dont help with vitamin intake, like when Im on prednisone they automatically put me on calcium and vit D .
I take Omega 3 tablets, a multivitamin, Vit B12 tablets as well a 3 monthly injection and the calcium with vit D3. Maybe ask your doctor to put you on a course of vitamins, as I know my teeth are very bad due to the medications etc but I dont think they break as bad as they used to since being on a lot more vitamins.
Michelle 40 years old
Diagnosed with CD 2004 (undiagnosed correctly +- 3 years, wrongly diagnosed with IBS)
Bowel resection 2005
medication: pentasa 500mg , Co-codomol 500mg/32mg codeine
loperamide 2mg (prn - take as many as 10-20 a day)
calcium tablets, multivitamin tablets, Omega 3
questran light (3 sachets/day), 3 monthly B12 Injections