Depression is a debilitating disease that every one is likely to experience over a short or long term period of his or her life.

Methods and Materials: This study aimed to examine the one - month prevalence of anxiety and depression in Tehranian resident population. 1070 men and women (age 20-65) were screened by Beck Depression Inventory (BDI). Then, those who scored above the cut - off point were psychiatrically interviewed. The interviewers were blind to the respondents' scores on BDI 5% of the total sample were also added to the list of those to be interviewed. Interviewers were the third year psychiatric residents at Roozbeh hospital. Tehran, especially trained for this research's purpose.

Results: The results showed women (BDI- 12.16) are more depressed than men (BDI- 8.47). Furthermore, men (%16.7) were less likely to have depession disorders than women (% 30.50).

Conclusion: We will discuss discrepancies between (the present results and the results from previous research by others).