It is clear that many people are deciding against having a genetic profile prepared, or a DNA test as it is commonly known, because insurers are likely to require the disclosure of the results. It is entirely possible that those results will lead the insurance company to refuse to provide cover, to increase the premium or to limit the duration and extent of the cover. Health insurers, by the way, are prohibited from distinguishing between customers on such grounds as age, health and DNA test, and the health insurer NIB makes that clear in its offer of half-price DNA tests for its customers. NIB does warn those customers that a DNA test may affect some of their other insurances, and NIB itself offers one of those insurances that would almost certainly be affected, life insurance. The advantage for NIB in encouraging its customers to have a DNA test is that a person's knowledge of their health vulnerabilities may allow them to reduce that risk, and reducing the risk of such as heart attack and many cancers is very much in the commercial interests of NIB. The range of illnesses and conditions covered by a DNA test is extraordinary. Here are some listed by NIB's DNA test firm, the US-based Navigenics: abdominal aneurism, brain aneurism, breast cancer, Alzheimer's disease, diabetes (type 2), heart attack, lung cancer, melanoma, multiple sclerosis, prostate cancer, stomach cancer, colon cancer and glaucoma. For most of the illnesses forewarned is forearmed but the problem of disclosure dissuades many from seeking that advantage.
A DNA test may be best seen as just another medical test. An insurer can, and often does, require prospective customers to undergo a medical examination, which delves into many issues of the utmost privacy, so why should it not be free to require a DNA test? Is an existing health threat, such as untreatable high blood pressure disclosed in a medical examination, any less private than a DNA test's finding of elevated risk of Alzhermer's disease? Should insurers be free to demand a DNA test or should they be barred from even asking for the results of such a test?