Norwegian psychologist and scientis Jan Ola Hesselberg claims in this article that half of all health research does not get published.
The problem stems from publication bias and sees researchers only publishing positive reports or surprising findings. The norwegian foundation Extrastiftelsen works together with 18 norwegian health organisations to sign the petition alltrials.
Hopefully this will start a trend where research generally and health research especially is registered and will show more than clickbait headlines.