How to Delete Your Data From 23andMe, Ancestry, and Other Sites

If you’ve sent a DNA sample such as a tube of spit to 23andMe, Ancestry, MyHeritage, or one of the many other companies that offer direct-to-consumer genetic testing, you’ve sent them the essential information they need to provide you with their analysis of your genetic code.
But if you later decide that you want to remove your genetic information from the web for privacy reasons, can you? And should you?