Originally Posted by
SGT Rock
It isn't worth it. Imagine if 2000 people per year tried to forage up the trail...
Food is the fuel that makes your body move. Plan to get stuff from towns that is calorie dense, is something you want to eat, and is as light as possible. A good rule of thumb is to get 2 pounds of food a day and try to make that food something that has about 100 calories per ounce carried. If you read a label while in the store this really isn't hard to do at all. Follow this advise and you can easily get up to 3200 calories per day for food intake. If you try to forage, that could take hours away from your walking and it would be hit and miss depending on the season, the plant, the geography, how bad the area has been picked over by critters, etc.
Best to keep the pack weight and body weight down and food weight up. At least the food weight diminishes as you walk.