Introduction: Age related hearing loss has become a problem of increasing social interest due to the rise in the average age of the population. The risk factors remain controversial until nowadays. Objective: The purpose of this study is to find out the prevalence of presbycusis in elderly from Mogi das Cruzes-SP, and the association of diabetes and hypertension as risk factors. Methods: We gathered a sample of 132 older people in a health fair, executed a pure tonal audiometry in all of them and excluded those with hearing loss from any other etiology. Systemic diseases were investigated in the 88 patients that were not excluded. Results: Overall, the prevalence of hearing loss was 84 percent. Aging was closely related with the increasing of hearing loss; 17,6 percent of those between 60 and 64 years and 100 percent of those above 74 years had presbycusis. 65,9% of the elderly had systemic diseases, nine of them (10,2%) were diabetics, 27 (30,7%) were hypertensive and 22 (25%) had both pathologies. Thresholds were higher for men than women, in those with presbycusis as well as in those without hearing loss. Conclusions: The study revealed high prevalence of presbycusis, mostly in men and in the oldest patients. We have not found any relationship between presbycusis and the systemic pathologies studied.