Conclusion

Over the last quarter century, there has been significant progress in the development of medical science, which began brightly lit the way clinical practice.
The authors made an attempt to present these successes in several aspects: first, by the light of modern concepts on the mechanisms of disease development; second, it is shown how to make transition sickness to health; third, revealed the meaning of primary and secondary prevention, acquiring large medico-biological and socio-economic importance.
We will hope that the theoretical background made when reporting entity the most common diseases, will allow the reader to comprehend the complexity of the transformation taking place in the body during the development and course of these diseases, and to understand what should be its behavior in this or any other problem is to ensure the successful implementation of various preventive measures.