AncestryDNA has now tested more than 18 million people, making them, by far, the largest genealogical DNA database in the world. This is great news! At this rate of growth, they should break 20 million by mid-January.
23andMe‘s database has more than 12 million people, and the newcomer MyHeritage has more than 4 million. When you consider all of the genealogy testing companies, more than 35 million individual kits are out there available for matching.
This is great news for anyone wanting to discover new relatives or trace their family history. The more people in a database—and the more databases you yourself are in—the more likely you are to advance your research.
That’s why I advise most people to start with AncestryDNA but to get into the other databases as soon as you can. In Europe, especially in non-English-speaking countries, you might start with MyHeritage instead.