LEF has a vitamin K formula with 9 mgs of K1 and
1 mg of K2 with a mix of mk4 and mk7.  I assume
there is very little mk7. It has the longer side
chain and has a longer biological half life.

As to the dose, I think a 2000 IU dose used
year around would be a reasonable choice
provided one gets into the sun.
I don't take it year round. I do plan to get
the value checked during my next check up.

Elevated PTH is related to ectopic calcifications.
Elevated PTH happens when the vitamin D levels
are low.

One still needs weight bearing exercise. And keeping
healthy levels of  both androgen and estrogen are both
also important to prostate health. Low is bad for
testosterone provided you have ample vitamin D
and excess estrogen or estrogen like chemicals
are bad for prostate.

Cannell is very pro-supplement. He takes a large
dose during the fall and winter as I recall much like
I do and for a bit longer. But then a Doctor works
inside whereas I often work out in the sun with
a wide brimmed hat.

And there is some evidence of some controls on vitamin
D metabolism. Granted I stop the supplement when
I get a decent amount of sun. People with really really
low 25 OH D serum levels show a larger in increase in serum levels
when a supplement is used according to Heaney
as I recall. Cannell claims higher levels of 25 OH vitamin D
tends to darken the skin due to increased melanin synthesis.
I think this is only a personal hypothesis on his part.
Viethe had recent peice on two persons taking
dose of vitamin D. One was taking too much and
the other test out as OK. The man taking too much
had MS, vitamin D helps in MS so it is said.
He was taking a truly huge dose per day.
If I find it, I put in a posting on this thread.

He is right to have doubt about the merits of
of "cod liver" oit. It is a highly refined product
that has be distilled and put back together again.
It contains too little vitamin D in ratio to vitamin A
to be a healthy stand alone vitamin D source.
Otherwise it is a fine source of vitamin A.

As to his outlook as I recall him saying something
about being Christian. The concept of a creator
may have some traction with him at some level.
On the other hand Viethe frames his arguments
in Darwinian terms.

Personally I recall an old geologist who would
frame his ideas about a regions geology in
terms the flood of Noah and the 7 days of creation
with Pious Fundy country follk, with his religious but somewhat
less literal neighbors he'd explain it differently
and with his buddies the time frame would go really
long and the outlook shifted yet again.
The point is one should look beyond the framing
and consider the immediate facts that hit
the pocket book or impact health.

Here is a really good link to lectures on
the topic of vitamin D. It is very indepth.
Do not start at the beginning, rather
choose a lecture in the middle and
work from there....trust me on this point.

These lectures add up to many hours.
If you have dial up skip the visual aids
and just listen to the lecture feed. If you
have modern ISP service choose both.

http://app2.capitalreach.com/esp1204/servlet/tc?cn=asbmr&c=10169&s=20343&e=6950&&