Does low carb work?

Does not because they are your bodies main source of energy. If you don't get enough then your body takes from your protein supply and diminishes the fuel in your bones and body. Not to mention the protein sugars and energy do not get transported to the brain and therefore there is a lack of overall energy. Plus you will go into starvation mode and gain the weight back plus more.

It all depends on your body. Different diets work for different people. To find what works best you must try different types of diets

Cut simple and crap carbs, not complex, nutritious ones