Someone else was just asking about this as well in another email. I'm three months out from treatment and could go days without eating if it was up to me...but during the treatment my wife made me at least 2 milk shakes a day with Carnation Instant Breakfast (vanilla 2 packets). It did the trick because I had minimal weight loss. Now that the treatment is over I'll look for something to eat out of habit, not because I want something to eat. But, like many others, I have found some food that I liked but that I don't like now..it just tastes different. I was a smoker too so in addition to the treatment issues anyone who has smoked and then quit knows what happens...everything tastes different due to the tastebuds coming back to life after nicotine withdrawel. Heck, I think my insides were really at war taste wise...everything to me at first tasted like day old chewing gum.
Try the shake and instant breakfast. You can use no fat milk, sugar free ice cream and sugar free instant breakfast. It literally was a life saver for me and I must admit I'm still drinking them daily.
Good luck and God bless.
Mike