My husband doing chemo after diagnosed with iiib colon cancer, tumor removed on #7 treatment , sugar level is really high now, what causes this?

Ask your medical tea: Your treating doctors will have the right answer. Chemo does not cause the blood sugar to go up but some of the other drugs used for nausea control can. One such drug is a steroid called dexamethasone(decadron) which can be the cause, but only your nurse of oncologist can give you the correct answer.

Decreased Insulin: In the setting of chemotherapy, broad systemic toxicity is possible with one potential affected organ being the pancreas. Should the beta cells of the pancreas be injured or reduced in number, the body will have a lower overall capability to produce endogenous (internally produced) insulin. Low Insulin secretion is associated with high blood glucose levels. This setting may require Insulin tx.

Diabetic now: Diabetes may be in your body and it manifest clinically in any moment of your life, mainly is stress situation like is now. You did not say if the diagnosis of diabetes has been established with a glycohemoglobin testr.

He may be diabetic: Sone of the pre-medications we use in chemo can increase bloo dsugar. If levels are high he needs to be evalauted for diabetes and if needed treated as such.