K1 - that's the blood clotting one from vegetables, particularly green leafy ones...tat's not it.
Local library (was) amazing back in the day...had everything from Alistair Crowley, Puthoff and Targ, Every issue of the British "Motor Magazine"... ...and one that I read by Weston Price.
Long story short...retired dentist who wanted to understand why pinched faces and overcrowded mouths were the "norm"...so he went out and had a look at traditional people's and their diets, and importantly their facial structure and dentition.
Findings were typically that traditional people, traditional diets (more akin to hunter gatherer's) had good solid facial structures, uncrowded, full mouths, and strong healthy teeth.
Surprisingly, families moving to western diets (moved to reservations, loss of hunting/fishing grounds etc.), the children from exactly the same parents, but the new diet showed the western facial structures and dentition problems...same genese, different environment...
He found that their diet had lots of B and C vitamins, and lots of fat soluble A and D (there's those two again), but also had something that he couldn't identify, which he called "Activator X"...which appeared to be be found in organ meats, some cheeses, egg yolks, offal in general.
Recently, "activator X" has been found to be Vitamin K2...very differnt to K1.
K2 appears to be necessary for the body to use Calcium properly...put it into the skeleton and teeth rather than lining arteries with it.
Eggs, gouda cheese, duck livers are good sources. Natto is probably one of the best, but not my thing.
Again, the things that "modern" medicine has been telling us to avoid while osteoporosis, calcified arteries and the like are all part of being alive in western world.
Not evangalising...it's just a common sense thing that I've been monitoring from the fringes for the last 20+ years.
My mother was being managed for Cholesterol and Beginner's osteoporosis about 2 years ago, and I brought this one to her attention...nothing crazy, just a few poached eggs for her light evening meal 3-4 times a week, and some grilled cheese on toast for lunch similarly.
December she had a full range of tests (chest pain that turned out to be excessive shovel use in the garden)...they did the ultrasound on her heart and arteries...zip, zilch, nada...the doctor was impressed at no calcification at 71, and has dropped the statins provided she eats oats most breakfasts. Bone density is back in normal range...Mum is drug free again.
BTW, the most common source of K2 in US is hot dogs...it's got all the bits that these people would eat first.
Many years ago I read a book called Diet and Nutrition by Rudolph Ballentine, still have it. He was looking at diets in more primitive cultures, and very interesting how much they got right that modern diets don't get right at all. Protein for one, in these cultures they don't eat much meat, their animals supply their other needs...like how as a kid we never ate chicken, our chooks were for eggs, not meat. They got full protein from mixing proteins, so rice and dahl, pita bread and fallafal, taco...maize and beans, peanut butter sandwich etc. Cultures that should be low in minerals weren't, because when they ground them, minerals came from the motar and pestal...etc.
Taking calcium supplements or eating dairy products for calcium is less than useful. It doesn't work. Never has, never will.
Healthcare and nutrition long ago parted company. Instead of living a healthy active lifestyle you are often encouraged to take a pill and told that everything will be okay. If things get worse there are more pills. There are lists of symptoms, tests, and graphs to guide your doctor to make sure you get all the correct pills. Once the symptoms are smoothed over you're all done, pronounced healthy and ready to face life.
My Mom had weak bones and low calcium levels and her doc told her to take Tums, she did for a year or so with no improvement on bone density tests. Her doctor moved and and she was assigned to a PA and she said that Tums have a calcium that is not absorbed very well and she prescribed her a calcuim citrate magnesium citrate supplement to take once every day at bedtime and withinn a year her bone density showed about a 30% improvememt and she had less pain. So calcium citrate works better than calcium carbonate at least that is what the PA said.
Weston Price traveled the world making uncontrolled observations of native people, and from that tainted data, pushed his dietary beliefs as actual science. Thereís a good bit of reading on him and the foundation that bears his name at Quackwatch, Science-Based Medicine, and Rational Wiki.
The study thatís linked above appears to have been published in a journal with the dubious name of Integrative Medicine, the scope of which is all sorts of alternative medicine. That is to say, medicine that has not yet been proven to work, or has been proven not to work. This study was not a clinical trial, and since no real testing was done, Iíd be very careful about drawing conclusions from it. The author is suspiciously employed by the International Health and Science Foundation, the sole purpose of whick is to promote K2.