I haven't lost much weight, but I think that's because my muscles got built up. I have a 4 mile commute, so about 40 miles per week, plus whatever bike errands I do (carfree here).

I have noticed some clothes fitting a lot better, I had one sweater that was in line for the donation bin but it fits again!. I think a big problem was that when I saw this happening, I went back to my old bad habit of having a beer after work. Basically, biking allows me drink what I want and not get fat. It's a good life.