"I'm fairly certain that virtually everyone has either suffered a TBI or knows someone that has but they don't talk about it.
"There's a stigma attached to it which is why you'll find a lot of rugby players who did retire due to brain injuries have not admitted to the fact or don't want to talk about it."
Mr Morris said in recent talks during a community initiative, "Concussion - a changing culture", the regional organisation struggled to find sports players who would openly talk about how they had been personally affected by brain injuries.
"We did find a local boy who was prepared to do that and it's actually been great to see the transformation that's taken place in him when he first talked about the problem. With some help he's actually made an amazing improvement."
While public perception was that concussions in sport was the leading cause of brain injuries, the majority were actually caused by falls at home, school playgrounds and workplaces, Mr Morris said.
National Awareness Week begins on March 19 and schools, shops and workplaces were encouraged to incorporate black-themed dress-ups and events to raise funds for the local associations.
Mr Morris said TBI could be life-changing for not only individuals but their families, who take on responsibility for ongoing care and both physical and emotional stress.