New Scientist is a pretty well respected magazine which popularizes science.

I think most here know or suspect that "Diet Science" is almost a lying
prideful competitive mess.... including the conflict of interest
internal to the USDA who both promote the growth and use of carbohydrate
crosp as well as claiming to "establish a healthy diet for Americans".

The first two paragraphs are:

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 Most scientific papers are probably wrong

    * 02:00 30 August 2005
    * NewScientist.com news service
    * Kurt Kleiner

Most published scientific research papers are wrong, according to a new
analysis. Assuming that the new paper is itself correct, problems with
experimental and statistical methods mean that there is less than a 50%
chance that the results of any randomly chosen scientific paper are true.

John Ioannidis, an epidemiologist at the University of Ioannina School
of Medicine in Greece, says that small sample sizes, poor study design,
researcher bias, and selective reporting and other problems combine to
make most research findings false. But even large, well-designed studies
are not always right, meaning that scientists and the public have to be
wary of reported findings.

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http://www.newscientist.com/article.ns?id=dn7915