I find that I'm curious about chronic human disease more than anything else. Personal interest of course, because of my age. I just type the best key words I can imagine into Google Scholar or PubMed and go from there. Abstracts are good enough to get an idea of subject matter. Sometimes the full articles are free and contain decent lists of citations.
For example, when I was heading for a wheelchair because of osteoarthritis of an ankle five years ago (coupled with deficits in the other ankle from old injuries), I decided a club foot (arthrodesis) would be better for locomotion. But a vascular surgeon had to ensure there was enough circulation in the foot for the surgery to heal). When ultrasounds revealed advanced atherosclerosis of both limbs from the lower abdominal aorta to the feet (many arteries were occluded and the very best arteries were 50% occluded), I began to check the literature commencing with the keywords - CALCIFICATION OF ARTERIES.
I could have looked at dozens of books on osteoarthritis and cardiovascular disease, but they all contain the best of peoples' imaginations and the best of modern Pharma-Medicine which at the moment can promise maybe a 1% regression in atherosclerosis or even a slowing-down of progression of atherosclerosis. I just have to check these things for myself.
I'm fully aware that one case history does not make a story or a convincing argument.
Nevertheless, as a byproduct of the material I read, I am now convinced that Vitamin K is our most important vitamin, that it not only REGULATES blood clotting, REGULATES where calcium is deposited in the body (soft or hard tissue), but most importantly is a REGULATOR of the health of artery endothelium.
The more I read, the more I'm convinced that a deficiency of vitamin K is manifest as atherosclerosis, which in turn manifests as poor circulation to all organs and manifests as Osteoarthritis, Cardiac anginas, poor Kidney function, loss of Skeletal Muscle function (affecting balance and performance). All of these have reversed in my case. I've had no personal cognitive deficits or strokes, so can't speak personally on those matters, but there is evidence that atherosclosis is associated with strokes and may be asociated with dementis.
I did post a thread on my own experience a year or two back.
Apart from beating my own Australian Plank best time last year (61 minutes) I'm still doing personal bests at the gym on most exercise stations. I should have well and truly reached my 'brick wall' and be going backwards by now.
Apart from my own immediate interest, I do research subjects that come up in this forum if they arouse my curiosity.
As an added comment, I find it extremely hard watching videos where speakers have a point or two to make. I feel myself writhing and muttering for them to get to the point. I much prefer written material.