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