2min Igra Omar Mustafa $ son Farhan is one of many Swedish children diagnosed with Intollectual Osabuty Photo” Nutkue Tutunan Swedes are getting dumber and no one knows why FultA[D i0ol’ For the ninth year in a row; the average IQ in Sweden is a trend that is puzzling researchers “It’s a mystery;” says a leading intelligence researcher; who believes the development is unprecedented in modern times falling –