cheryl,i was diagnosed with oligodendroglioma in 1997, had surgery to remove it then 5 yrs later had a reoccurence, temodar and radiation. constipation has always been a problem for me, so i try to make sure i get enough physical activity, alot of water , healthy and enough food. there's all kinds of natural supplements and herbal teas for this ; things like those can be habit forming , so the best thing you can do is keep moving, God has blessed us with many herbs and foods that can help good luck, praying for you