Wow, you really know your stuff, this makes perfect sense to me, it would explain why his stools went darker when I gave him coconut oil. Thanks for this because I think you have talked me into getting a stethoscope which I would never have even thought about before. I wish my doctor would read some of these postings instead of telling me she has no idea why !! I have had a hunch that his liver might have something to do with the problem but I did not understand the relationship until you have explained it to me. I'm off to look for a cheap stethoscope on the internet. Thanks.