So the bf has multiple concussions, what can i do to help his memory?

Avoid more TBI: The most important thing that you can do is to avoid activities where he may have future concussions. So if he is a football player, no more. There is a cumulative effect to multiple concussions which may have profound effects many years later. The other thing to avoid is alcohol and recreational drugs which can impede the brain's recovery.

Focus in football: Increasingly, we are concluding that multiple head injuries lead to dementia, and the nfl is focusing on this severe issue. Prevention is key, and cognitive-behaviioural therapy, speech therapy, and a few memory enhancing agents may help. Medical foods such as axona, cerefolin-nac, and vayacog may be useful.