It's really true what David says - my son is 34 (1/20/07) and was feeling at his worst just after treatment. He was weak - I even had to help him from the car to the house at one point towards the end of treatment, and he spent most of his time in his bedroom sleeping. He could hardly stay awake to try to eat or drink something. He lost a lot of weight and didn't have a feeding tube - There were many times I wished he had. He had all of the above that you mentioned with your Dad and it was a slow process (It seemed a LOT slower to me, than it really was!) And he was in excellent shape before treatment and never smoked, ate healthy stuff. It's good that your Dad can get the nourishment thru the tube. It's so important to get enough liquids and food. It is important to keep track of his medications. I had a hard time trying to get my son to do that and I had to put up a chart on the refrigerator and I also got him to put a chart on his computer where he finally started to enter his meds every day. I would suggest also keeping tract of any reactions he has to the meds so you can report anything to the doctor. My son had a reaction to a nausea med that made his tongue go into spasms and found out later from the doctor that he could have taken Benadryl for it. After that he always kept some on hand. A couple of days before the three week point after end of treatment he started feeling much better. About your Dad's blood pressure, is the doctor checking it and letting you or him know what it is? My son always got a sheet showing what the normal range was and if he was within it. There were times when it was very low and just barely within the normal range. So, many of the effects with radiation affect much younger people, too. Working hard to cope with the nausea and the pain while in a weakend state is hard work. I'm sure he will feel better soon and get back his interest in the things that he did before treatment. It does get better. It really does! (for the caregiver, too)