It's possible, but certainly not easy if you're going to do it in a healthy manner.
If you drink sodas and eat junk food, simply cutting those out, will give you a good start.
I lost 20 lbs in 4 month you can do it eat healthy lots of water low carb high protein
You probably can't lose fat that fast. Generally the most an average person with no special considerations can lose is about a pound a week. More can be lost through water weight with diuretics and crash dieting can also increase fat loss but only for a short time. When we lose fat too fast our metabolism will slow in order to conserve fat (fuel) deposits (starvation mode) and that creates new problems such a resetting the metabolic rate and fat gains during the plateau, etc.
You certainly can: just make sure you do it the healthy way, and don't over-abuse your body. Cutting junk, sodas, juice, and carbs (in the right amount so that you don't crash either) would do it. Don't forget to exercise! :-) Good Luck!
yes you can !!!! check out OPTIFAST, it is a medically supervised program, with weekly group meetings for support and helpful information to change habits regarding food choices