On my '03 thru-hike, I really didn’t lose that much weight. I started at 180 and finished at 175 or so. My friend that I hiked with, however, started around 180 and lost 30+ pounds. I think his weight loss stemmed from getting sick several times on the trail. He battled lyme disease, a cellulitis (spelling?) infection, and various other ailments during our thru-hike. We are the same age, comparable in weight, similar fitness levels, hiked the same amount of miles per day, and ate basically the same food. The only difference is that I stayed relatively healthy the entire trip and he battled several ailments. I was in such good shape when I finished, I started hitting the gym and put on 20+ pounds of muscle in no time at all. I was like Barry Bonds, minus the 'roids and HGH!
Gusty