Someone else mentioned Weight Watchers and I have to agree. I lost 45# in approximately 5 months. At the time of the weight loss I was not biking and exercising in only minimal amounts.
I have keep the weight off for over 8 months. I started biking again 4 months ago and feel great. Now do over 15 mi per day with long rides of 25 mi.
Weight Watchers recommends a balalnced diet. Never tells you to drop all the carbs or all the protein. They are based upon a range of points per day. A food's point value is calculated using a formula based upon calories, fat, and fiber.
All I can say is that it works well for me.
Mark