Look into an alkaline (vs acidic) diet. The main benefits are health, but there's a certain amount of weight loss involved as a result. It also means cutting out or severely reducing such seemingly benign things as coffee and tea. But those aren't about the caffein, it's about the fact that when the beans/leaves are roasted, they become acidic. So, green tea is fine, for example. Anyway, there are lists & charts online that can guide you as to which foods are more alkaline, and which are more acidic. If you can stay about 80% alkaline, you'll see & feel results within a week. Add exercise to that (read: keep your heartbeat up) and you'll really see weight and size results soon.
I lost 30 lbs in 6 months with a mostly alkaline diet, and time on the treadmill 5-6 days a week. Felt great, slept well, more stamina on tour, looked noticeably thinner and more fit, had almost no asthma symptoms, and even reduced my snoring!
Like I said, if I'd stuck with it, I'd still be there. :(