Absolutely! When I was very anemic I was exhausted, and had a hard time breathing. Just going from my kitchen to my bedroom would have me out of breath. It took about 6 months for me to get better from that, with a lot of iron supplements. My hemoglobin was at 8.
Diagnosed with Crohn's Disease 2/06 after sever GI bleed. Has been suffering since 1998. History of rectal fistula and gallbladder removal. Currently taking Prednisone: tapered to 35 mg, Asacol, Questran, Toprol XL (for high blood pressure).