Universities often sign away the independence of their scientists when their lawyers ink agreements with industry to perform company-funded medical research, according to The New England Journal of Medicine. Apparently the researchers do not even get full access to the data:

One percent of school officials who responded said all their contracts let their scientists have access to all the trial data and not just that collected at their facility. Ten percent said all their agreements permitted investigators to help shape the data collection and monitoring plan governing the studies.

If a study is to be considered scientific, the data should be available to the public. When the authors don't even have the data, it is a scam.

This study says eating too much MSG can make rats go blind.