it's important to note that the nih.gov domain doesn't mean this is endorsed in any way by the NIH. (In case you were very shocked, like I was.) It's just a link to PubMed, which is an aggregator of journal articles hosted by the NIH's National Library of Medicine. Nearly any life sciences article published in any kind of journal, good or bad, would end up with an abstract on here. Evaluate it on its own merits.
I would love to see nih.gov implement a voting and discussion system similar to HN so that folks can debate the poor quality research and improve upon the good research.