I know Pub Med has multiple articles re Curcumin/cancer, but it's never reassuring when you here that the integrity of scientific papers are questionable.
There are articles about the effects of curcumin on human tumour cell lines now in question. Seven papers (5 curcumin related)have been retracted from a single journal.
Only one note specifies that the correction does not affect the paper’s conclusions.
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http://retractionwatch.com/2016/02/22/journal-retracts-7-papers-by-md-anderson-researcher-long-under-investigation/
http://retractionwatch.com/category/by-author/bharat-aggarwal/
Some of these places have become overzealous about perusing retractions. Half the figures cited look like reused control bands or sloppy science. Many, many valid papers would crumble when pressed with this type of scrutiny.
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