We all know that proper nutrition plays a huge role in infant and toddler development, both mental and physical.
As far as the child being advanced, it's more likely that high intelligence runs in the family. Chances are the child is a one and only and is getting a lot of learning/training at home as well as in your place.
I've found that children that are bright like this are a huge joy to adults but tend to be socially awkward with their peers. As I've said before, you can't have it all.
