Liquid diets have been around forever and they have been the center of attention at one time or another and the popularity of these types of diets doesn't seem to be going away any time soon. Most people who use them like them for how simple they are and how easy they are to use. Some will claim it's the easiest way to lose weight but we need to be careful here when we listen to these kinds of claims.
Liquid diets can set people up for failure with unrealistic expectations regarding the diet and can lead to disappointment because although a person may lose weight fast, there are many, many cases where they regain the weight shortly after they stop the diet. Liquid diets can be dangerous as well if a person doesn't educate themselves about them and the nutritional needs of their bodies. It could just lead them to years endless and fruitless dieting.
A real liquid diet is one that a person will be on that will have them on liquid meals during most of the day. This does not mean that a person drinks only liquids and nothing else. For instance if you were to go on a Slim Fast diet, you would drink two of their shakes a day and then eat one good healthy meal as the third meal. A true liquid diet does not make you stick with liquids only and nothing else.
Even though liquid diets are not for everyone especially if they have medical issues, they do have their benefits. On a liquid diet, it cuts down on the choices that a dieter has to make. Sometimes it's the choices for some people that make it so difficult to stick to a diet and gives them more opportunity to fall off the diet and splurge on things they shouldn't be eating.
Another benefit of this kind of a diet is how easy it is to comply with the well planned diet. There is really nothing you need to do or remember or keep track of except for the two different times that you will be drinking the liquid and then when you would be having your one good solid meal. If the person just sticks to it and makes it become a habit then it becomes easier and easier to deal with the liquid diet and becomes second nature. A lot of people do much better when things are simplified for them.
You need to understand though, that these kinds of diets have drawbacks as well. For one this kind of a diet can leave a person's body depleted of nutrients. Since the person is limited to the man made nutrition that is found in the diet shakes/drinks a person will more than likely end up very short on their daily requirements of vitamins and minerals. Even if a person does get the right vitamins and nutrients they still will end up lacking in what are called vital micro nutrients that can only be found in the whole foods that we eat.
A really big drawback with the liquid diet is that you can't stay on them forever and when you do end this kind of a diet, there is no slow way of moving you back into a regular diet and more times than not the person will discover how difficult it is and they will end up going back to their old eating habits because they had nothing to prepare them for a gradual re-entry into a regular diet and this will generally end in rapid weight gain and probably all of the weight they lost will be gained back.