Genetic privacy

The concept of “genetic discrimination” and the associated need for confidentiality of genetic information, or "genetic privacy," have only recently entered our vocabulary. In numerous cases around the world, individuals and family members have been barred from employment or lost their health and life insurance based on an apparent or perceived genetic abnormality.[citation needed] Many of those who have suffered discrimination are clinically healthy and exhibit none of the symptoms of a genetic disorder. Often, genetic testing results in uncertain probabilities rather than clear-cut predictions of disease. Even in the most definitive genetic conditions, which are few in number, there remains a wide variability in the timing of onset and severity of clinical symptoms. Employers have access to medical/genetic information, which may be used to discriminate against their employees.

http://en.wikipedia.org/wiki/Privacy