A Girl's "Dream" Figure

Another celebrity, singer and actor Beyoncé Knowles, admitted to using a liquid diet to lose weight quickly for her "Dreamgirls" role [source: Jessen]. While Beyoncé says she did lose weight very quickly on the liquid diet, she stopped short of recommending the diet to anyone because she says she gained all of the weight back as soon as she went back on solid foods.

Liquid Diet Drinks

Depending on the type of liquid diet you follow, you are typically allowed different drinks. If your doctor puts you on a liquid diet, however, drink only what he or she recommends.

Generally, on a clear liquid diet, you need to stick to transparent fluids. Sample foods include:

On the full liquid diet, you can have clear liquids but also thicker foods with a bit more substance. Sample foods include:

Many people also follow a modified liquid diet in which they use meal-replacement shakes or protein powders for one to two meals per day and consume one regular, solid-food meal. This can help stimulate weight loss by consuming fewer calories while allowing the third solid meal to replenish nutrients that are often lacking from diet drinks. Meal-replacement shakes are sold pre-made in cans or in a powder you add to water or milk; people often choose these for the convenience of an easy-traveling meal.

If you are put on a liquid diet plan by your doctor, follow all advice he or she gives you. And, if you're planning to start a liquid diet on your own, it's a good idea to discuss it with your doctor first so that he or she can be notify you of any potential health risks.

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