What is the impact of brain injuries on mental health? Author, speaker and Director of Frontiers of Hope Michael Hempseed joined Tom and Kat to look at what he is seeing, symptoms and who can be affected when it comes to brain injuries. What is the impact of brain injuries on mental health? Author, speaker and Director of Frontiers of Hope Michael Hempseed joined Tom and Kat to look at what he is seeing, symptoms and who can be affected when it comes to brain injuries.