Abstract: Mankind has struggled with many diseases throughout its history. Infectious diseases are especially prevalent among the population. According to its scope, such infectious diseases are called pandemics, epidemics. Among the population of Central Asia, a number of diseases, such as plague, plague, malaria, tuberculosis, and ringworm, have caused partial or mass extinction. The characteristics of the geographical distribution of these diseases largely depended on the natural and social geographical conditions of the regions, the lifestyle and traditions of the population.The effects of the Spanish flu pandemic, which has killed nearly 100 million people in the last hundred years among a wide range of diseases, have had a profound effect on the nosogeographic situation, especially in Europe and later in the Americas. Analyzes show that the deterioration of the environment, man's unlimited domination of nature, the deterioration of the ecological situation, as well as the spread of related diseases on earth pose new challenges to medical geography, which studies the causes and patterns. The rapid development of science and technology, the steady increase in human impact on nature and consequently, a number of negative changes in the natural environment have a significant impact on human health. The acceleration of the process of urbanization which in turn causes problems such: as air, water and soil pollution.