{HEAD ~ These deficiencies} can contribute to motor dysfunction, memory loss, or other central nervous system defects in aging, trauma, and {TAIL ~ degenerative diseases} such as Alzheimers or Huntingtons Disease 
contribute to
{ HEAD ~ These deficiencies } can contribute to motor dysfunction , memory loss , or other central nervous system defects in aging , trauma , and { TAIL ~ degenerative diseases } such as Alzheimers or Huntingtons Disease
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH