If you tested your DNA with a personal genomics service like 23andMe, DeCODEme, FTDNA's Family Finder or another testing company, you can learn more about your risk factors for hundreds of diseases. Many of these SNP's are tested but not (yet) part of the report provided by personal genomics companies. This is free extra information.
We recommend that you install the SNPTips add-on for Mozilla Firefox to browse these pages. It allows you to upload your DNA results in the browser and show instantly which allele variant you have for each of the SNP listed below.