The 100-mile diet, or any variation, is not about weight loss. It is about eating local and minimizing the impact on the environment with your food choices. A three week story was recently in the Globe and Mail about how one family managed. It is an interesting take on how you can adjust. They did make an exception for coffee, and I agree with that one.
If the articles are locked use this Google news search. Usually they work from there. To see the extensive coverage on this topic if you search in Google News you will find a lot of articles. Maybe one for your area to help you along.
Week1, Week2, and Week 3