Google will tell you all you need to know

'According to the Google handbook, Google reserves the right to de-list pages “that directly contradict well established scientific or medical consensus for queries seeking scientific or medical information, unless the query indicates the user is seeking an alternative viewpoint.” The institutions and industries that influence Google can now use the search engine to censor out any contrarian or dissenting information that would dishevel their business interests.'

https://www.naturalnews.com/2018-06-10-google-internal-handbook-instructs-engineers-to-bury-natural-news-web-pages-from-search-results.html