This phenomenon is true to varying degrees in academic medicine (maybe all of academia) as well - personally have seen excellent data and methods disregarded when they don't confirm existing agendas. The choice for the researcher can become one of burning out trying to do good work and getting nowhere, or acquiesce and only present data that is uncontroversial. Huge existential threat to knowledge advancement.
Physician here... it is being sold unregulated at gas stations. I echo the comments of many others that "supplements" should have to undergo safety vetting similar to any other pharmaceutical. Bogus supplement companies put people in harm at the worst and make people waste their money at the best. Snake oil salesmen.
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