I'm trying to recall what's missing in
Lo que es bueno para el ______ es malo para los hígados
and also wondering how it can be used
Nothing works?
nothing is effective?
There's no magical cure?
One size doesn't fit all?
Different strokes for different folks?
EDIT: Just now remembered
Lo que es bueno para el bazo el malo para el hígado but still don't know how it can be applied to other than medical situations
EDIT ANEW: Sorry, just now saw it posted already here for "a Catch-22 situation" which sounds reasonable. Thanks for your patience!