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.

Written byJohn D. Loike
| 4 min read

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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 Loike serves as the interim director of bioethics at New York Medical College and as a professor of biology at Touro University. He served previously as the codirector for graduate studies in the Department of Physiology Cellular Biophysics and director of Special Programs in the Center for Bioethics at Columbia University College of Physicians and Surgeons. His biomedical research focuses on how human white blood cells combat infections and cancer. Loike lectures internationally on emerging topics in bioethics, organizes international conferences, and has published more than 150 papers and abstracts in the areas of immunology, cancer, and bioethics. He earned his Ph.D. from the Albert Einstein College of Medicine of Yeshiva University.

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