you might be kept from going say very selective schools, but even then, if your overall application is strong, it definately will not.
I probably would not retake the dat becasue it might be hard to do as good or better on many of the sections. you only have 1 bad score, excellent GPA and DAT overall. hopefully, english is not your first languange, and if it is, you should think about how to explain your 16 if you ask. however, i do not think it is a very big deal.