Caveat Emptor

The UK's Times Online reports on the growing market of companies like 23andMe, kicking off with this straight-to-the heart statement: "Leading genetic testing companies are providing clients with widely divergent and inaccurate predictions of their chances of developing serious diseases." The author has used the services of 23andMe, DecodeMe, and British provider GeneticHealth, getting in return "contradictory assessments of the risk I faced of developing illnesses, including Alzheimer's and glaucoma, and a confused verdict on my risk of suffering heart problems."