How do you do a fact check?

Snopes.com is a good starting point.

Try this source:
https://middlebury.libguides.com/internet/fact-checking

But if you’re too busy to follow that link and actually read the info (or you’ve got lazy), just use the CRAAP test as your best friend in finding reliable sources -

C – Currency. What is the timeliness of the information? When was the information published or posted? Has the information been revised or updated? Is the information current or out-of date for your topic? Are the links functional?

R- Relevance. What is the importance of the information for your needs?
Does the information relate to your topic or answer your question? Have you looked at a variety of sources before determining this is one you will use?

A – Authority. What is the source of the information?
Who is the author/publisher/source/sponsor? Are the author’s credentials or organizational affiliations given? Is the author or organization a primary source of original reporting or research? Are they recognized as accurate and objective by peers and by the general public?

A – Accuracy: What is the reliability, truthfulness, and correctness of the content?
Where does the information come from? Is the information supported by evidence? Can you verify any of the information in another source or from personal knowledge? Does the language or tone seem unbiased and free of emotion?

P – Purpose. What’s the reason the information exists? Is the purpose of the information to inform? To teach? To sell? To entertain? To persuade? Do the authors/sponsors make their intentions or purpose clear? Is the information fact, opinion, or propaganda? Are there political, ideological, cultural, religious, institutional, or personal biases?

So if you actually want your own research to be “extensive” and credible, and you want avoid crap being pushed by some troll with an attitude, learn these rules and follow them.

Good luck.

I wouldn’t look at random YouTube sites and then try to fact check what they say rather start with reliable sources you can have some confidence in. Try government sources or major universities with health faculties. Google will lead you to their websites where you will find good advice.

For medical stuff I start here: https://www.webmd.com/

When you see or hear something from an internet source, go out to see if you can find similar things that might support it. Look for scientific, medical, etc. source that might explain why something works or doesn’t work. Look for the differing opinions…the devil’s advocate. Look for the key words that indicate something is opinion or fact. “It could mean” or “seems to indicate” are prime examples that something is opinion.

When you gather enough data, put it all through the smell test…does it smell right or wrong. And in the end, believe whatever you want to.