Yes it does. I am a cancer patient and am getting chemotherapy and even though we might not have the same type of cancer I know how hard chemo can be to your body. I had experience horrible pains and even wanted to stop getting the treatment. It does so much harm to your body that sometimes I wonder if it really is worth it. I do believe laughing and joking is wonderful when you are going through something like this. I wish you the best and speedy recovery from all you are going through.