So if you didn't watch the previous one, or even if you did, this is the layman explanation. This is all hypothesis stage and into the research stage. Hopefully we will know more in the next year as the studies are finished and the results published.

LDL cholesterol has been bad mouthed for quite a number of years and has resulted in lots of drugs sold to control it. It appears even with research in the last few years that "bad cholesterol" label was a misnomer. It was wrong. Current research will hopefully eventually be able to tell us "why".

https://www.youtube.com/watch?v=YhL22O5A_jQ