Is there really a higher incidence of depression among the Askenazi? I hadn't heard that before. I can see how German or European Jews would have been affected,

Is there really a higher incidence of depression among the Askenazi? I hadn't heard that before. I can see how German or European Jews would have been affected, possibly for generations after WWII, but that set does not include all Ashkenazis, and definitely includes some Sephardics.