Study looked at more than 1,900 studies in suspected predatory journals and found that the majority didn't meet basic information requirements to be published by a legitimate journal - The journals often publish poorly researched, illegitimate science endangering scientific credibility and patients.

See the source article by following the link below:
Study looked at more than 1,900 studies in suspected predatory journals and found that the majority didn't meet basic information requirements to be published by a legitimate journal - The journals often publish poorly researched, illegitimate science endangering scientific credibility and patients.