Key points from article :
23andMe and Ancestry say that sales of their DNA testing kits have been slowing over the past year.
DNA testing unnecessarily worry some people and create a false sense of security in others.
The excitement about the idea of getting a person's DNA tested has worn off.
Privacy concerns are turning down people from getting commercial DNA testing.
But these companies have valuable, vast data sets, containing information on their customers.
These information include customer's DNA and some other personal details.
