Complex sentence: In 2011, researchers at John Jay College of Criminal Justice reported that dietary zinc supplements can mask the presence of methamphetamine and other drugs in urine; similar claims have been made in web forums on that topic.
Split into simpler sentences: In 2011, researchers at John Jay College of Criminal Justice reported that dietary zinc supplements can mask the presence of methamphetamine and other drugs in urine. Similar claims have been made in web forums on that topic.