7 things to consider before buying one of those kits that lets you test your genes

Ever considered getting a peek inside your genes?

Today, it seems easy. Find a personalized gene-testing service - there are more than a dozen companies in the US alone - spit in one of the tubes the company sends you, pop it in the mail, and check out your results online.

But how much can the average person learn from one of these tests?

We chatted with Columbia University professor Dr. Robert Klitzman, a bioethicist and psychology professor and the author of the recent book "Am I My Genes?" to find out: