Resistence to pain is genetic? [more news added]

abc.net.au/science/news/heal … 328797.htm

Binge drinking can cause perminent DNA damage.
abc.net.au/science/news/heal … 529973.htm

Human brain stem cells placed within animals?
abc.net.au/science/news/heal … 530700.htm

The stress of fighting with your partner affects your ability to produce wound-healing proteins.
abc.net.au/science/news/heal … 524594.htm