Losing weight quickly will in and of itself cause your body stress and take away from health. Start eating healthy - fruits, veggies, whole grains, lean meats. If you're losing weight too quickly, eat more whole grains, that will slow it down. It should be steady. If you do some research into the longevity diet or other areas that site heavily on scientific experimentations, you'll find this to be true. If you are eating badly and switch your foods to good foods, you will lose, then over time you can lessen amounts to keep the weight loss coming. Good luck and be well!