What happens when you eat less carbs-leptin decreases making it harder for you to be satisfied and ghrelin increases, as well as cortisol levels (stress hormone). Denying your body food (skipping meals/starving) slows your metabolsim to conserve energy and stores that energy. When you drop calories and carbs, you will lose weight initially and it will stall out. You may also lose muscle. You want to preserve what you have or increase it. Your muscles will suffer when you drop calories and carbs. You need enough energy to move that muscle and protein to build that muscle. The more muscle you have, the more energy you need to move that muscle and the more fat you will burn.
For example, if you build 10 lbs. of muscle, you can burn up to 500 calories/day. Vice versa, if you lose 10 lbs. of muscle, then you have to eat less than 500 calories to maintain. Keep you calories and carbs high enough to grow muscle. Never eat less than 1200 calories a day unless prescribed by a Physician or Registered Dietician.