Researchers questioned genetic tests which look for mutated genes that may increase risk of breast cancer. Many of the tests review more than 100 genes, while only 21 of them have been found to be indicative of potentially developing breast cancer, according to the paper published in The New England Journal of Medicine.
Many researchers have pointed out that tests are giving doctors more data than they know what to do with, in many cases because research has not yet caught up to the amount of information that can be collected.
A recent study in Denmark compared 454 women with abnormal mammogram results with 908 women with normal results using a questionnaire that asses the psychological impact of a cancer diagnosis. The women with abnormal mammograms were given follow-up tests, and 252 were found to have had false-positive mammogram results.