Whatever you do, do a healthy diet and exercise plan. If you go on a fad diet and lose too much too soon you will be losing water and muscle and not fat. Then when you start our normal eating habits again you will gain it all back plus.
So the best thing to do is learn how to eat healthy and change your eating habits to normal healthy eating that you can maintain for life. Eat healthy and exercise and even though you will only lose a pound or two a week, you will be losing “fat” pounds which will stay off, and even if you don’t lose much you will be gaining muscle which will aid in burning fat so you will “SEE” results even if it doesn’t show on the scale. Work with a doctor or nutritionist who will explain to you how many calories you should be taking in and how many you should be burning up. In a addition they will teach you how to read the labels and what to watch out for. Calories and fat grams are not the only things to look out for.