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In reply to the discussion: FDA halts sales of 23andMe DNA test kits [View all]Xithras
(16,191 posts)Their only claim is that they can identify whether you carry genes that have been identified as potential genetic components of various diseases. They don't identify your chances of getting them, but simply identify genetic markers that may predispose you to certain maladies.
For example, three journal published medical studies, published in Nature, the New England Journal of Medicine and the Journal of Human Genetics, have found that there are genetic markers that make childhood asthma likely (one found that each copy of the T gene at rs7216389 increases your childs odds of having childhood asthma by roughly 1.5x). Their test checks for these genetic markers and will let you know whether your child has them.
I can't find a single reason why empowering people with their own medical information is a BAD thing.