These are the people who want to buy 23andMe

Spit into a test tube, send it to Silicon Valley, then sit back and wait for information about your ancestry and genetic health risks. For more than 15 million people, taking a 23andMe test once seemed like a good idea. 

For around 80% of customers, their interaction with the company went even further—they opted to have their data used in health research. That’s how 23andMe amassed one of the largest DNA databases in the world, with ambitions to see all those DNA strands one day deliver new medical breakthroughs.