Well, with half a year of running I dropped from 170lbs to 148.
Honestly, depending on how much you weight right now I would first advise a high protein + vegetable diet. Couple that with a moderate amount of cardio activity like swimming, cycling or jogging and you're set
Proteins will help you burn fat and vegetables can stuff you up, while having almost no clories and tons of fiber, which helps digestion.
It might sound like a hell of a transition, but soon enough it becomes less annoying and you can get back to some old foods
