Abstract
Parallel to global population and epidemiological transmission, Iran is experiencing population and epidemiological passing period as well. As we can see, Iran’s population level is transferring from mid-life period to oldness and in upcoming decades, its steepness would be increased. Aging period is accompanied by high cost and chronic diseases. It is predicted that in 2030, aged people above 70 comprising less than 8 % of world population portion, will have 50% of all cancers, 58% of diabetes, 95% of Alzheimer’s and other Dementia, 62% of no communicable diseases death, 25% of injuries deaths and 30% of communicable diseases deaths. Material and Methods: This is a review which obtained the results from national census, UN population databases, Population Reference Bureau, Google Scholar, Proquest, WHO, SID, Magiran, books, journals and related population magazines have all been summarized and evaluated. Conclusion: Iran’s population is going to be aged. The upcoming decades will include huge number of aged people. This issue will be succeeded by increasing need to in-patient and out-patient cares and high costs to the health system. Thus, a great focus is needed by health administrators and necessary steps should be taken to face this ever increasing challenge.