Dude 1400 is a mistake. You NEED more than that. The FDA guides are complete BS, and based on someone who wakes up, sits up in bed, and then goes back to sleep. Their guides are horribly unrealistic. What happens when you starve your body (as you are doing) is your body goes into a conservation mode, so to speak, and adjusts how it burns the "fuel" according to your intake. If you aren't putting enough in, its basically going to eventually slow down your metabolism. That is why people on diets initially have a dramatic weight loss, followed by very slow weight reduction. Your body adjusts to your diet. What you want to do is take in calories but watch what you eat. Lean protein + carbohydrates are good. Avoid trans fat, alcohol (is processed directly to fat), and saturated fats. Don't kill yourself just to look thin... your body will start to feast on your muscle mass before long too.