“Go Grey in May” is a national campaign to raise awareness of brain tumours. Going grey a way to raise awareness of brain tumours May 27th, 2021 “Go Grey in May” is a national campaign to raise awareness of brain tumours. Tags: Karen MetcalfeAiyireti DilinaerLisa PorterSimon Rondeau GagnéJohn TrantDorota LubanskaKeith Frank StringerAbdulkadir HusseinOtis Vacratsis