Freaknomics on "Do You Really Want to Know Your Future?"

Fascinating Freakonomics podcast: "Do You Really Want to Know Your Future?"

Discusses why some people do (or do not) wish to know whether they have the incurable (and fatal) genetic condition Huntington's Disease.  There is a test for the condition which, but not a treatment.  Those with the gene will appear normal growing up, then develop symptoms as young adults.  If they carry the gene, their children will each have a 50% chance of also having the gene.