7 pounds in one week is not good at all, assuming the weights are accurate. Even if you are off, you probably aren't off by much and it's still not good. To put this in perspective, it takes appx 500 extra calories per day to gain 1 pound in a week. So to gain back the 7 pounds in a week he would have to consume an EXTRA 3500 calories a day for 7 days!!

I guess he has finished 3 weeks of rad. Remember the 2 weeks post Tx will probably be some of his worse weeks. That's when I lost the most weight. I lost 7 pounds in a week and ended up in the hospital with the docs telling my wife I was 24 hours from kidney failure.

Don't let him fall behind. You have got to be the "bitch" and make him consume 48ozs of water and at least 2000 cals EVERY DAY. I found the quickest, easiest and less painful way to do that was by consuming the nutritionally balanced drinks like VHC, Boost and Ensure. But don't forget the water.

I know it's the toughest thing that he (and you)
have to do right now, but it's also the most important. So many things can go wrong if he doesn't keep up and believe me, neither of you want to learn this lession the hard way.

You only have another 6 weeks or so to tough it out but it's a very important time in his Tx.