If I can’t convince you that the best way to lose weight is to severely decrease your carbohydrate intake, your other option is to severely decrease your fat intake. You need to cut calories, no matter what you do. The advantage of a low carbohydrate diet is that (calorie deficits being equal) you will lose weight faster and you will be far less hungry. The advantage of a low fat diet is that you can eat fruit and bagels and jelly beans, even though you will lose weight more slowly and be far more hungry. Your call.