Genetic Testing: Does Knowing Risk of Disease Make a Difference?

Genetic variants may provide information you’d rather ignore The complete sequencing of the human genome by the Human Genome Project was a remarkable accomplishment and a cause for celebration. Several companies including 23andMe, Navigenics, and deCODE have capitalized on that scientific achievement by offering genomic testing directly to the public. They promise more than they can deliver, and

Dubious Genetic Testing

Stephen Barrett, M.D. Harriet Hall, M.D. During the past year, a few companies have begun offering genetic testing combined with guidance on diet, supplement strategies, lifestyle changes, and/or drug usage which they claim can improve health outcomes. This article explains why such testing should be avoided. Until recently, hereditary tendencies were determined mainly by examining