Companies market to you according to your shopping habits, your age, your salary, and your social-media activities. In the future, they may be able to advertise to you on the basis of your DNA.
Do you carry the genetic variants associated with lactose intolerance? Here, Lactaid has a coupon for you. The genes for male-pattern baldness? That’s accelerated by stress, so maybe you should come in for a discounted massage Jimmy’s Spa & Bath.
