It shouldn't. At least if you've been reading any of the recent pieces on genetic testing from NYT, CBC, etc., or the various blogs that have picked up these an

It shouldn't. At least if you've been reading any of the recent pieces on genetic testing from NYT, CBC, etc., or the various blogs that have picked up these and spun them either further, suggesting that such tests are snake oil and give misleading information. Short answer from the author (a genomicist) and agreed to by me (another genomicist), is that that the genotyping used is accurate and that the reports explain that they are only looking at major variants and that most traits are polygenic.