I read that there's bacteria in the oil after swishing, but the stomach and GI tract can generally handle that with no problem. Digestive enzymes in the stomach and GI tract should kill any unfriendly bacteria. I've gotten good results with "oil pulling" with swallowing the oil. I wouldn't swallow hydrogenated oil, but I think it would get similar results. I don't know what toxins would be in the oil after swishing.