New research highlights a frustrating fact about science: What was good for you yesterday frequently will turn out to be not so great tomorrow. The sobering conclusion came in a review of major studies published in three influential medical journals between 1990 and 2003, including 45 highly publicized studies that initially claimed a drug or other treatment worked.Subsequent research contradicted results of seven studies 16 percent and reported weaker results for seven others, an additional 16 percent. That means nearly one-third of the original results did not hold up, according to the report in Wednesday’s Journal of the American Medical Association.
