At Home Genotyping

We aren't yet at the stage here everybody has their genetic code sequenced, but it looks like it will be a standard medical tool for people in the future. The main benefits being that you could findout what medical conditions you might have a genetic inclination to get or other physical or dietary traits that knowing about would help you live healthier for longer.

Costs for sequencing are rapidly diminishing and there are now a few companies that offer a similar service, but by using genotyping to rapidly (and much more cheaply) give you access to that kind of information information.

23andMe ($99 to $207)
deCODEME ($500 to $1,100)
Navigenics

It should be noted that even if you do have a genetic marker that suggests you will get heart disease. That just means that you might, there are still many other factors that lead to most conditions.