Funny you should mention that. I had what could probably be called an inflamed lower colon just inside the rectal area one time and on a whim I bought a big quart size container of yogurt in a flavor I liked and ate it in two sittings (so to speak). Well dang it if that inflamation didn't subside quite a bit so I bought more yogurt and within a week I was cured after suffering with it for at least 6 miserable months. True story.
Nowadays if I'm having any trouble with my digestion system I'm reaching for the big quart size tubs of yogurt but I rarely do because I use the Equate brand of Benefiber called "Fiber Therapy" (from Walmart) which is a finer grind than the regular fiber for daily use. Both will work but they do work a little differently and both will help with weight loss. If neither the fiber or the yogurt works then it's definitely time to seek out a doctor. BTW; I add ground flaxseed and some fiber (plus almond slivers and other good stuff) to my homemade bread maker when I make bread. I'm so spoiled that regular bread is lame compared to mine now and I spend half as much. The machine pays for itself fairly quickly and lasts for at least two years (for me so far) and that's using it 1-2 times a week. Another good product is Beet Root Powder; I mix it in with the fiber sometimes if I feel like I could use more energy that day.
Funny how a complaint about simple word turned into an in-depth convo about our guts.