@kmlnj, Yes you'll get your weight back and maybe then some. My radiation treatments were way back in 2003, it took awhile but within the first 5 years of recovery I gradually gained all the weight lost and then some. It wasn't until 2022 that I lost almost 30 lbs. in a very short time. Overtime the long term effects had caused loss of teeth, difficulty in swallowing because of increasing size of the radiation scar tissue (similar to a burn) and other factors like aspirating. I was not getting proper nutrition with the things that I could eat and swallow. So, now I am on a feeding tube which has given me better nutrition and increased energy. I am maintaining the weight but not gaining. Take care!