No matter what kind diet program you are on, you will lose weight if you burn more energy than you consume. Low-carb diets work because you must strict meal plans that effectively limit caloric intake. In low carbohydrate diet control the calories intake to your body via food is the key.

Low carb diets is not essentially a starvation diet, so don’t make it become like starvation diet.

Starvation diet is not good and in the meantime, many health problems can result. Very low-calorie diets should only be undertaken under the close supervision of a physician --- I warn you.

The American Academy of Family Physicians provides the following definition of low-carbohydrate diets.
Low-carbohydrate diets restrict caloric intake by reducing the consumption of carbohydrates to 20 to 60 g per day ( typically less than 20 percent of the daily caloric intake ). The consumption of protein and fat is increased to compensate for part of the calories that formerly came from carbohydrates

We can see that the primary goal in low carb diets is focus on a high quantity of fat intake. But replace carbohydrate with fat may develop increased in cholesterol levels.

There is variant of low carb diets that are focus on high protein intake.
The potential problems is it may cause abnormal excretion of calcium. Especially in young age. Calcium consumption is often below the minimal requirement, and losing excess calcium can lead to Osteoporosis.

What is the benefits of low carb diets? This articles will give you details about it.