http://www.ncbi.nlm.nih.gov/books/bookres..../tocstatic.html
http://www.ornl.gov/sci/techresources/Huma...x.shtml#general

I keep reading in various places about linkages recently discovered between genetic defects and the related health defects which are being discovered as the 'genetic revolution' unfolds.

The sites above contain relevant details of what's been found so far.
I encourage others to add posts on this topic as and when they come across them.