I have talked with 3 different nutritionists. Pre cancer weight was 210. During treatments he was down to 150. He got back up to 180 - 190 afterwards and maintained that for 5 years. He has always supplemented with Boost since the cancer. Since it agrees with him, they feel best to keep him on it. I tried the Nutren twice, both times with upset burning stomach so back to boost. Was hoping for something without volume to add for weight gain. He has a foam wedge/ramp he sleeps on and the bed is elevated. He hasn't slept on his back for over a year.