In evaluating a scientific claim made by anyone, the only thing that matters is the quality and quantity of evidence. It does matter who is making the claim, it does not matter if you believe their claim, and it does not matter if they make a powerful emotional argument–absent real evidence, it is nothing but words.
When discussing the validity of a scientific or medical claim, some people accept that there is a hierarchy of scientific sources, from nearly worthless (that would be anything from Mercola or Natural News) to scientifically significant systematic reviews. But a lot of people think that if it is published, without any regards to where or how it was peer-reviewed, it signifies the scientific consensus, period, end of discussion. Some will abuse PubMed, the US National Library of Medicine’s powerful search engine, searching for the one article that supports their “beliefs,” while ignoring the 1000 other articles that don’t.
Or how some individuals will use the obscure cell culture study to support their claim that XYZ prevents cancer, while completely ignoring all other evidence that cell culture studies are just an early phase of research, and until it’s confirmed in a large clinical trial with human subjects, the cell culture study barely ranks above conjecture or speculation. Continue reading “Not all scientific articles are equal in science”