I haven't lost a significant amount of weight from cycling, although like a number of other women here, my body shape and size has improved. As Oakleaf suggested, long distance cycling is great for burning calories. Unfortunately, it also provides a ready (and worthy) excuse to eat more. I'm FAMISHED almost all the time when my mileage is up. I don't miss many meals when I'm reading 150 to 200 miles a week.

I think it's possible to curtail caloric intake when you're riding a lot, but it takes a lot of discipline. You also have to be pretty careful to get enough calories, the right kind of calories, and at the right times of day to fuel high mileage. It's not easy. That heaping plate of pasta looks really good after a long ride.

I would encourage you to include some resistance training in your cycling routine. Cycling is great for your legs, but it doesn't do much to maintain or build muscle in your upper body or core. You might also keep a food diary to track what and when you're eating.

Good luck!