Abstract
The lifetime rates of major depression are higher in Women compared to men and are about equal between the sexes for Bipolar Disorders across diverse countries. Although the rates for major Depression and Bipolar Disorders differ between Countries the findings show that the sex ratios are similar. The mean age of first on set major Depression is younger in females compared to males in Edmonton , Florence, Paris, Beirut and Christchurch. The female mean age of onset Bipolar Disorder is 8 years earlier than males in Puerto Rico, and 6 years earlier than males in Taiwan and Korea. There is evidence that major Depression in the younger births cohorts (those born since World War II) may be rising in males And stabilizing for females. Women’s increased vulnerability for major Depression is consistent across diverse cultures. World Psychiatric Association Press, WPAP, 2(4),1-3.

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