Originally Posted by Steven Low
I believe it's also pretty common if you're switching over from low quality foods to higher quality foods (aka processed to real foods).
Likely due to the same factors as you mentioned though.
Some people I've talked to and I have had some problems dosing the fish oil and intestinal problems when starting to eat more healthily. Probably due to the existing gut flora (which is obviously poor b/c of the processed foods) not liking our food choices + fish oil.
If starting to eat healthily also includes significant increases in their plant fiber consumption, I'd look there first. Especially with just "normal" diarrhea type symptoms.
If there is froth or an oil slick on the toilet water, it's definitely the excess fat.