The aim of the study was to evaluate the prevalence of hyperuricaemia and gout in the population of the Tychy urban agglomeration that is only moderately exposed to ecotoxins. Energy expenditure during professional work and dietary habits were taken into account. The study was carried out in 1957 subjects, including 1391 men and 566 women, divided into 5 groups differing in the physical activity connected with their work. In all subjects the serum uric acid level was determined, what enabled isolating cases with hyperuricaemia and gout. The evaluation of dietary habits was performed. The prevalence of hyperuricaemia was found to be 37.9% in the whole population studied, and that of gout was 2.4% in men and 2.5% in women. The occupational physical activity decreased the serum uric acid level. High-calorie diet was a risk factor for hyperuricaemia.