Even though it shouldn't, the struggle of losing weight can sometimes feel like torture. That is, if your definition of torture is having to say no to a second slice of chocolate cake. But some people take weight loss to an extreme called Very Low Calorie Diet (VLCD). According to some reports, the VLCD principals of extreme calorie deprivation have been used as a means of control for prisoners being interrogated.

Wait a minute. Back that bus up. Can things like calorie restriction and waterboarding really be considered in the same category? Apparently, some people in government believe that they can. The fact that VLCD has been used in such a shocking way should set off some warning bells.

VLCDs are often prepared drinks or foods that replace regular meals. Usually, VLCDs total 800 calories or less per day. When medically prescribed and supervised, VLCDs can be a safe measure for a period of time. And, due to the extreme calorie restriction, a moderately to severely obese person can potentially lose 3-5 pounds per week.

A doctor will decide if a VLCD is a good option for you. Unless obesity-related health problems exist that could benefit from rapid weight loss, a more moderate approach is a better choice. After all, 800 or less calories per day is not sustainable for a lifetime.

VLCDs, particularly when not medically supervised, can have their fair share of side effects. Minor, though unpleasant side effects, such as fatigue and diarrhea can be troubling. Other more serious side effects, such as gallstone formation, are also possible.

When properly supervised, people on VLCD plans will slowly start to integrate regular foods and more calories back into their diets until they reach sustainable and healthy calorie levels. For long-term, lasting weight loss, it's important to learn new, healthy habits. Choosing nutritious foods and giving your body the proper amount of calories is vital to a healthy weight and a healthy life.

Have you ever tried a VLCD plan? What was your experience?