They do: https://www.npr.org/sections/health-shots/2018/11/10/666545527/vitamin-d-and-fish-oil-supplements-disappoint-in-long-awaited-study-results?t=1588980441

They do: https://www.npr.org/sections/health-shots/2018/11/10/666545527/vitamin-d-and-fish-oil-supplements-disappoint-in-long-awaited-study-results?t=1588980441791 https://www.npr.org/sections/health-shots/2018/11/10/6665455... https://www.lifeextension.com/featured-articles/2010/12/federal-government-funded-study-fails-to-recognize-value-of-vitamin-d https://www.lifeextension.com/featured-articles/2010/12/fede... It's just that not everyone likes the results... If a doctor's cognitive bias leans towards "alternative medicine", for example, they don't want to accept certain findings, so they ignore them. The real complaint those people have is "there's not enough (government-funded) studies about [remedy] that fit my preconceived convictions". At least that's my suspicion - I could be wrong of course.