Not trying to be an A$$hat,just an observation. When did we start relying on YouTube videos as sound science? or even somewhat credible science?
I've always thought that if you wanted any real facts, periodicals and scientific journals were the go to source
As a general rule I would agree with you, however there are numerous sources of information on Youtube provided by suitably qualified individuals, who provide their interpretation of pre-print studies or peer reviewed technical papers that you may not be aware of or have access to. If you have a scientific training or technical background, it is relatively easy to spot the legit sources of information and it is a shame to ignore them, just because they use YouTube to disseminate interesting and useful information. For example, if you watch the fist link I provided, you will see that a medical doctor (by no means an expert, but with enough training to read and understand technical documentation) provides at least three (3) references for you to follow up if you wish to verify his interpretation, as all good scientists do.