By ANAHAD O’CONNOR, The New York Times, Published: November 3, 2013

Americans spend an estimated $5 billion a year on unproven herbal supplements that promise everything from fighting off colds to curbing hot flashes and boosting memory. But now there is a new reason for supplement buyers to beware: A study using DNA testing offers perhaps the most credible evidence to date of adulteration, contamination and mislabeling in the herbal supplement industry. Click to read the full article.