Unfortunately, it is extremely difficult to find truly unbiased research. This has been a problem for multiple decades. Research is expensive. Whoever is footing the bill will inherently want results that help pay for said bill. This is particularly true in medicine.
A well respected UC San Diego scientist, Dr. Beatrice Golomb, is no quack or conspiracy theorist. Also well credentialed is the Science Network which hosts a shocking youtube which reveals the deeply entrenched fraud within the medical/pharmaceutical research communities.
If the link doesn’t work, type in Google: Beatric Golomb Candles in the Dark.
Well worth 20 minutes for viewing.