Weightloss generally works like this: create an energy deficit either through diet or exercise, and your body will go to the fat to get its energy, hence you lose weight. Once you have a calorie deficit which totals about 3500 calories, you should expect to lose approximately one pound of fat. We require a certain number of calories just to survive, and also for our lifestyle, and also for our exercise. That number for me is 2000 (without exercise, keeping in mind that this number is higher the higher your weight). So if I eat 2000 calories everyday and dont exercise, I will stay at this weight and not gain or lose. If I cut my calories to say 1500 calories per day, then in one week theoretically I should have lost a pound. This actually worked like a charm during the initial phase of my weight loss, but now my body is sort of in plateau mode and doesn't really shed weight like that anymore. You are starting out so you can work this method. Aren't you more likely to stick to a healthy way of eating that allows you to eat and not be starving rather than starving for a few weeks and then giving up totally, because, after all, who can or wants to keep up starving forever.