These diets often result in rapid weight loss initially, but to expose deficiencies in vitamins, minerals or proteins more or less pronounced. This imbalance and the monotony of the diet almost always leads to an abandonment of the plan … accompanied by rapid weight regain. The pineapple-grapefruit diet is an extreme example, since it does almost no protein and thus leads to muscle wasting that can be very dangerous.

The Mayo diet

Principle: The Mayo system type hypocaloric (reduced energy intake for the body draws on its reserves). It is based on three meals per day consisting of foods rich in protein and vegetables. Lasting two weeks, it excludes sugary foods, starches, dairy products and fats. It limits the bread, cereals and fruit. The eggs are preferred (up 6 per day), as well as meat and fish. Tea and coffee are encouraged.

Critique: There are risks of deficiencies in various vitamins and calcium, due to restrictions in fruits and dairy products. We must therefore avoid the follow on the long term. This diet is not recommended for cardiac patients and the elderly. It must be absolutely avoided in pregnant women. It may cause some fatigue and lost pounds return almost certainly after the diet …

The Atkins diet

Principle: This is high protein diet (excess protein) and hyperlipidaemia (excess fat). It excludes all foods that may contain carbohydrates: cereals, starchy foods, fruit, sugar and dairy products except cheese. In contrast, consumption of meat, fish, eggs, animal fats and plant vegetables is limitless.

Review: The absence or lack of fruits and vegetables leads to a deficiency in vitamins, minerals and fiber. These gaps are directly responsible for fatigue and constipation. Moreover, the almost total absence of sugars is often the cause of muscle wasting. This method is highly recommended…

The Hollywood diet

Principle: This system is based on the exclusive consumption of fruits and vegetables until satiety. Other foods are consumed in extremely limited quantities.

Critique: This diet is very monotonous and usually causes extreme fatigue. Furthermore, protein deficiency is inevitable result is muscle wasting, which in the long term can cause serious health problems. Highly recommended.

The pineapple-grapefruit diet

Principle: This is a “variant” of the Hollywood system, based on the exclusive consumption of pineapple and grapefruit.

Review: As the Hollywood system, this method is strongly discouraged.