"This is likely Driven Sports' effort at damage control," said Pieter Cohen, an assistant professor at Harvard Medical School who was part of a team of scientists that in October published test results in the peer-reviewed scientific journal Drug Testing and Analysis documenting that samples of Craze contained an undisclosed compound that has a structure similar to methamphetamine, a powerful, highly addictive, illegal stimulant drug.
Cohen, who often researches issues involving dietary supplements, said it is a common practice for supplement firms to commission small studies to help promote their products.
Another team of scientists from the National Forensic Service in South Korea and the National Institute for Public Health and the Environment
in The Netherlands found the same meth-like compound in samples of Craze
purchased from retailers.
Their findings were published in August in a Japanese forensic toxicology journal.
said there is "no significance" to the new Craze study sponsored by Driven Sports
because of the way it was designed with so few people.
"To say this is not robust is a huge understatement and it does not fool anyone," he
said, adding that hundreds or thousands of people would need to be studied to detect many serious harms.
and Califf, the scientists at Harvard and Duke
, said the background of people authoring scientific journal articles as it relates to their truthfulness and veracity is relevant.
"The integrity of the research enterprise is based on trusting that what the researchers' report is accurate," Cohen