Pork, it's the other healthy meat:

In 2004 scientists created mice that transformed unhealthy omega-6 fatty acids into beneficial omega-3 fatty acids. They did this by transplanting a gene from the roundworm C. elegans into mice, thus raising the possibility of genetically engineering livestock with higher levels of the good fat. Now a team of researchers has realized that vision, creating several healthy pigs with meat rich in omega-3s.

The ultimate goal appears to be creating people who have more healthy fat in them than the current "stock" variety. Pass the pork chop!