In the DSM-5 one of the disgnoses is Mild or Major Neurocognitive Disorder due t

In the DSM-5 one of the disgnoses is Mild or Major Neurocognitive Disorder due to Traumatic Brain Injury (TBI). Concussions are a form of TBI. For the discussion this week, address the following:
How can repeated concussions lead to another condition called Chronic Traumatic Encephalopathy?
Why is there a gender difference in the statistics of who experiences concussions more?
What professions can you think of where is person is more likely to sustain a TBI? Why?