The Beach Boys founder had been placed under a conservatorship less than two years before his death Brian Wilson died of "respiratory arrest," according to his death certificate The Beach Boys founder's death was announced by his family on June 11 The legendary singer was 82 years old when he died,

Two weeks after the death of Brian Wilson, the Beach Boys legend’s cause of death has been revealed. The Los Angeles County Department of Health’s death certificate, first obtained by TMZ, reveals that Wilson’s primary cause of death was “respiratory arrest,” with sepsis and cystitis listed as contributing factors.