My Dad has stage 4 colon cancer, and he is doing very bad at this point. He has been put on hospice. I am wondering if he does these coffee enemas every 4 hours if he could possibly turn it around? The cancer has spread to his liver and it is mostly tumor now, it's exits to dump toxins are blocked. He is very yellow at this point and we are scared he may have weeks left to live. Can anyone give me any advice on this? Are the enemas able to help, make things worse, or do nothing?