The article presents the possibilities of using clustering algorithms to group and visualize data from blood tests of various people in the context of alcohol consumption impact on measured blood parameters. The presented results should be considered as the preliminary to the future works involving automatic visualization of medical data by using clustering algorithms. The authors present the results of clustering of the above data using kmedoids algorithm along with the proposition of visualization. The authors used as a set of input data „BUPA liver disorders” medical base taken from the Machine Learning Repository.