Still more alarming obesity studies show in fact that it is largely due to incorrect diet and lifestyle. For suitable alternative for prevention of this disease are now considered cereal foods, mainly based on increased fiber content. The importance of dietary fiber for human organism consist primarily in its protective function before civilization diseases. It has beneficial effects on digestive physiology and it is therefore an important factor in the prevention of obesity, but also other diseases. Fiber consumption in developed countries is low and it is below the lower limit of the recommended dose. Slovaks per day take only 10-12 g of fiber, which represents only 47% of the recommended dose. Recent large-scale epidemiological studies have shown that regular consumption of wholegrain cereals can reduce the risk of heart disease and certain cancers by 30 percent. One of the factors that increase the functionality of foods is the so-called indigestible resistant starch. For its the positive impact on the physiology of digestion is referred to as prebiotics new generation of dietary fiber. The increasing availability of tasty, whole grain products rich in fiber could be health benefits.