vit'k2 keeps calcium in your bones and out of your arteries

mom/gift/health/diet/vit k2/
vit'k2 keeps calcium in your bones and out of your arteries:
. for mom's 2019 b'day I gave her the book
Kate Rheaume-Bleue 2013`
Vitamin K2 and the Calcium Paradox:
How a Little-Known Vitamin Could Save Your Life.
about the decade's biggest news in health science:
vit'k2 keeps calcium in your bones
and out of arterial plaque!
[it also allows you to use higher doses of vit'D
without risk of soft tissue calcifications.]
. mom knows that natural sources of vitamins are best;
so, she is looking for a list of foods high in vit'k2;
and has found the part of the book
which describes Dr. Price's summary
of nourishing traditional diets;
I don't agree with some of that,
and point out that the book does mention
that while USA-americans get most of their k2
from well-aged european cheeses
(where k2 comes from both grass-fed milk
and from fermentation),
the long-lived Japanese get k2 from natto
(where k2 is made from soy fermentation).
. the supplement we currently take
is an extract of natto,
so it's the same as a natural source;
but I still eat grass-fed cheese in case the
supp's stated potency is not true.
. mom wants to know if her other book mentions k2
-- John Heinerman 1988`Heinerman's Encyclopedia
of Fruits, Vegetables, and Herbs --
but that book's index doesn't mention vitamins.
[ also that book is about the plant world;
and there is very little k2 in the plant world;
and that book is from 1988 when it was
not widely understood that vit k was actually
2 different vitamins, k1 and k2.]
. what the k2 book is good for
is showing us references to peer reviewed studies
that detail how k2 is important.
. one of the book's most notable achievements
was to warn that many supps are using
the mk-4 form (from animals) at too small a dose;
it needs to be 15,000 mcg (15mg) instead of 100mcg;
but the mk-7 form from natto
is good at doses of 400mcg
and the supps provide 80-300 mcg.