Works a crash diet

Crash diet

The calorie intake is significantly reduced with a crash diet. (Photo by: karandaev / Depositphotos)

Crash diets are diets that focus on quick success. The short-term reduction in weight is seen as a success.

Such a fast-acting diet can be useful if you want a few kilos less for a certain situation, such as an upcoming family celebration. However, users of crash diets generally fail to achieve long-term success.

How does the crash diet work?

The well-known diet rule, according to which the energy supply must be less than the energy consumption, is taken to extremes in crash diets. In particular, the calorie intake is severely limited in crash diets and is usually no more than 800 to 1000 calories a day. Even the basal metabolic rate of a healthy adult exceeds this value.

Particularly in the early stages of the crash diet, the low energy intake therefore leads to a reduction in weight.


The crash diet promises rapid weight loss. (Photo by: sergeypeterman / Depositphotos)

The main advantage of the crash diet lies in the Predictability and in the quick effectiveness. If you want to lose a few pounds for your daughter's wedding in order to be able to wear the chic dress, the quickest way to do this is with a crash diet. When judging success, however, it should not be forgotten that a large part of the weight loss is due to the loss of water and not of fat.


The crash diet is a very deep intervention in the body's energy balance. Crash diets are often designed as mono diets that do not contain a sufficiently balanced distribution of nutrients, minerals, vitamins and trace elements. Deficiency symptoms therefore often have to be balanced by dietary supplements.

Deficiency symptoms and the notorious yo-yo effect are among the side effects of the crash diet. (Photo by: billiondigital / Depositphotos)

The main disadvantage of crash diets, however, is that they do not bring about a change in lifestyle. The weight loss occurs only in the short period of the diet. At the same time, the basal metabolic rate decreases. Immediate weight gain is therefore inevitable after the end of the crash diet. The dreaded one Jojo effect in diets is a typical characteristic of the crash diet.


Crash diets are not suitable for starting a healthy and balanced lifestyle. On the contrary, in the long term, crash diets lead to weight gain, since after each stopping, the reduced basal metabolic rate leads to increased energy storage. Therefore, crash diets are only suitable for certain occasions in exceptional cases.

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