Are middle aged and elderly more likely to get ischemic colitis?

Yes: Ischemic colitis is generally analogous to a heart attack or stroke of the intestines, and many of the same risk factors, including age, high cholesterol, high bp, apply. While exceptional cases occur, in general older patients are at higher risk than young patients for ic.

Yes: Ischemic colitis is more likely in the older population. Many times no specific cause is found. Pre-existing circulatory problems tend to be present in the more severe and life-threatening cases.