This is so true! I have celiac, so I can't eat anything with wheat, barley or rye in it. Also, I'm already underweight, so if I really exert myself I'll lose even more weight, especially in the cold. Not only do I have to carefully consider what goes in my mouth at any given time, I also have to consider other appetite issues that make it difficult for me to eat at all when I'm tired. Because of that I tend to pack heavier food because I don't have to do as much with it. I don't go out on long trips... if I did I'd have to think more carefully about food than I already do. It is almost overwhelming.

MNS