Eat It, Own It!
How about we consider what a healthy weight would be for you. For women we take the first 5 feet in height and start with 100 pounds, now add 5 pounds for every inch. Example: 5 foot, 5 inch women should weigh 125 pounds (+/- 10%). For men we take the first 5 feet in height and start with 106 pounds, now add 6 pounds for every inch in height. Example: 6 foot man should weigh 178 pounds (+/- 10%). This does not take into consideration muscle mass but will give you an idea of where you should be.
So how many calories do you need? Women wanting to lose weight should consume between 1200 and 1600 calories; to maintain weight consume between 1600 and 1800 calories. For men wanting to lose weight aim for 1600 to 1800 calories; to maintain weight aim for 2000 to 2200 calories.
As weight loss begins, be reminded that a drop of no more than 2 pounds (1 kg) per week is considered a safe rate of weight loss. If you are losing weight more quickly than that, move up to the next highest calorie level. If you are losing more slowly, you should not eat fewer than 1200 calories per day - instead, you need to step up your activity level.