Ulcerative colitis does not cause diabetes, but the latter is so common that diabetes can occur co-incidentally. Steroid therapy can make hidden diabetes become evident, and will make the diabetes more difficult to control. By managing each disease carefully, both disorders can be adequately controlled. Adequate exercise and rest, and careful dietary regulation are important for maximal control of each disorder, and minimizing stress is very desirable if possible. Frequent medical check-ups are necessary, as are good hygiene and appropriate family support to ensure regular dietary intake, etc.