Has anyone used the 23andMe service? I'd like to know how accurate the results are.<p>Can they say you definitely carry a gene for diabetes or lactose intolerance, for example, or do they just say you're at a higher chance of developing this? The website example given for carrier diseases looks so vague it's not worth bothering with ("You are a carrier of one or more infected conditions"... great, which ones!)<p>If they can give me a list of things I need to be mindful of in the future and, more importantly, why, I'd happily pay $99 for that. I.e; you've got this and that gene which leaves you susceptible to this condition which may lead to heart disease, etc. and we're %xx certain.<p>Does anyone have any experience of this kind of thing?