Probably has to do with poverty, inequality and all the downsides of this like alcoholism and druguse while at the same time being a Catholic country with a higher % religious and more social people.
Norway the suicide rate would be from people being isolated.
Because being a polish man only leads to early onset balding, having a potato for a head, being fat, incurable alcoholism, severe mental illness, and generally being the least desirable of all men on earth.