Hi Bill
I was just reading your post and wanted to add my 2 cents. I personally have not gone through the wretched cancer battle that you and many here have. My Mom's tongue cancer is what brought me here.

But I am a personal fitness trainer and nutrition consultant and have some knowledge in muscle mass and the very important impact it has on one's health. You are right in your concern with the loss of your muscle mass as well as your concern with adequate protein intake. Muscle loss is a natural aging process that occurs in healthy adults begining at the age of 25. In your case with your illness it is even more extreme. Walking will not help you with maintaining or increasing your muscle mass. You really need to begin a safe resistance training program. Weight training is the the only thing a person can do to maintain and or increase their muscle mass. It is especially important at we age. It can take as little as 20 minutes a day 2-3 days a week to receive some great benefits. In addittion the protein is also essential to help your body build vital muscle mass. There are so many variations of protein shakes-ready to drink and powders. Just keep experiementing until you find what you prefer. Don't hesistate to add your favorite items to the powder and blend it up. Berries, bannanas, yogurt, coffee, cream, vanilla, etc...the sky is the limit to get the flavor to where you want it. The general rule of thumb is 1/2 gram of protein per pound of weight. In your case you might want to increase it up to almost a full gram per pound of your weight.

By increasing your muscle mass you will really feel alot better. Your energy will increase, your mood may improve, you will have better joint health and decrease your risk for injury.

Good Luck in reclamiming your health!
Tami