Why you should have Genetic Testing
The results tell of genetic markers that, if present, may signal susceptibilities to certain health conditions. These markers, called SNPs (or single nucleotide polymorphisms), are variations in gene sequences. SNPs don't cause disease, but can help determine the chances of developing a certain illness, according to the U.S. Department of Energy's Genome Program.
Results indicating you're at above-average risk for contracting a disease don't guarantee you'll get it, just as results showing no risk markers don't mean you won't. But for some, acting on the information like deciding to quit smoking or make diet changes may help prevent the disease's development or lessen its effects, according to Navigenics, a genetics testing company.