Opinion: Consumer DNA Testing Is Crossing into Unethical Territories

Data don’t support many direct-to-consumer products, from telomere assessments to bespoke diets based on genetic sequences.

John Loike
| 4 min read

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ABOVE: © ISTOCK, STEVANOVICIGOR

John D. Loike, a Professor of Biology at Touro College and University Systems, writes a regular column on bioethics for The Scientist.

Direct-to-consumer DNA testing has provided genetic information to more than 12 million individuals, traditionally for exploring ancestry. While such testing does not violate ethical guidelines, other uses of consumer DNA testing may cross the line. Over the past few years, many of these DNA testing companies have branched out into the realm of precision health, treading into ethically dangerous territories.

For example, 23andMe, with US Food and Drug Administration (FDA) permission, now reveals to consumers whether they possess a whole suite of genetic mutations, including those associated with Lynch syndrome and breast cancer, under the assumption that awareness will likely improve the health of its consumers. Other companies advertise that their DNA testing will better educate customers on what type of diet or lifestyle ...

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Meet the Author

  • John Loike

    John D. Loike

    John Loike serves as the interim director of bioethics at New York Medical College and as a professor of biology at Touro University. His biomedical research focuses on how human white blood cells combat infections and cancer.
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