When there’s a time delay, how hard it it to understand a cause? I learned from pain. It took me a decade to figure out that sugar alcohol was causing my chronic bowel problem. I chose diabetic foods, knowing that sugar alcohol such as maltitol is a laxative. But I thought I tolerated the small amounts in my food, because I never got diarrhea after eating. I’d get sick 18 to 24 hours later. My co…