Bkmk now, sort out later.
If this turns out to be true, this could be an ominous finding regarding heart disease. Amaloydosis of the heart muscle is a very serious disease with no known cure as far as I know. I worked in Cardiology for over 30 years and when we diagnosed someone with amaloydosis, it was pretty much a death sentence. With the only variable the amount of time you had left. It is kind of a crap shoot as to how fast it attacks the heart muscle and shuts it down producing congestive heart failure.
The internal links from the article are legit sources.