With the Atkinsdiet the supply is drastically reduced by coal hydrates. First on almost zero, late step by steps increases. Meat, eggs, fish, cheese, fat Mayonaise may be eaten here in unlimited quantity, no matter how high the content of animal fats is. Those is very unusual, however the consumption is forced directly by animal fat in quantities. Here coal hydrates are counted instead of calories. Control takes place with the help of a urine test stick. Thus analyzed whether the body ketonkoerper (a stoffwechselprodukt, which develops with this one-sided nutrition) forms and separates, this effect as desirable is regarded. With the Atkinsdiaet acts it around one-sided nutrition with rapid decrease in weight at the beginning particularly by loss of water. There is the danger vitamin -, ballast material and lack of mineral material. In addition it leads easily to increased Cholesterin and Purinzufuhr. Blockage, mouth smell, behaviourness and tiredness can be the results. The sufficient supply of liquid is with this diet one vitally necessary recommendation, so that the kidneys can separate the formed ketonkoerper and urine acid again. One can diet only advise pregnant women, kidney and liver patients as well as alcoholics against from medical view this. Increased risk for heart and container illnesses, charge and Arteriosklerose. Besides this Diaet does not have a learning effect in purchase to healthy nutrition.