Yes, the calciferol from sun and caciferol from animal sources are the same. However, your body will not overdose on calciferol from sun exposure, whereas it can if extremely large amounts are taken in supplement form.
I have to disagree when it comes to ascorbate. Ascorbate acid is not at all the same as natural vitamin C. It may be the same as isolated natural ascorbate acid, but it is not the whole vitamin profile which is what is found in nature. Nature does not provide isolated compounds and nowhere in nature is ascorbate acid by itself found. The same is true with most manufactured vitamins. You may be able to manufacture a mirror molecule, but you do not get the natural molecule WITH the complete vitamin profile and supporting compounds found in nature. And one must never forget that nature works synergistically (as do our natural bodies).
From the Vitamin C Council:
Since ascorbic acid is such a tiny portion of the natural Vitamin C Complex. any ascorbic acid product cannot possibly be natural. The reason is simple-to get sufficient quantities of ascorbic acid from nature, the other portions of the whole Vitamin C Complex would be so large as to make a single 500 mg "natural" ascorbic acid pill the size of a tennis ball.
Since there is no "natural" ascorbic acid, it is the combination of nutritive factors found in the whole Vitamin C Complex that do the healing, not the ascorbic acid. This was proven beyond a shadow of a doubt by the Nobel Prize winner and discoverer of ascorbic acid, Dr. Szent-Gyorgyi. In a letter to the editor of the esteemed journal Nature, July 14, 1936, p. 27, he wrote that when it comes to anti-scurvy and anti-hemorrhagic effects, there are "other substances of similar importance and activity that accompany ascorbic acid."
More important, when Szent-Gyorgyi tried to cure scurvy and other bleeding conditions, he found that "with pure ascorbic acid, we obtained no response.... Yet when red pepper or lemon or lime juice was used, the condition was readily cured." The reason for this is simple, the nutritive portions of vitamin C do the curing and healing, ascorbic acid _simply performs the antioxidant function.
So we have it from the horses mouth that ascorbic acid was not effective in curing the very conditions known to be vitamin C-deficiency diseases. This has been known since the early 1930s. But it is simple to reproduce ascorbic acid and sell it as vitamin C for big bucks. So the charade has continued all these years. The real need for ascorbic acid is to protect the healing nutrients in the whole Vitamin C Complex from oxidation
Yes, Chris I agree that the two ascorbates are the same. My point is that I prefer a full profile natural vitamin over an isolate. By the same token, I prefer D3 from sunlight. However, I do supplement with both items (the ascorbate is usually part of the wonderful intraMAX product). I also drink lots and lots of juices and usually eat considerable fruits for my whole C.
I agree completely with you about the inaccuracy of the broad condemnation of carbohydrates. There are certainly bad carbs, but there are also good essential carbs too.
As regards the Inuit, I suppose that they are a good illustration of how life is able to adapt - though I note that they generally get adequate amounts of most vitamins and minerals, with A, D, and C being notable exceptions. They certainly do get some of those vitamins as would be expected since whales and other fish eat lots of vitamin and mineral rich plankton. Perhaps as Grz suggests they are able, through adaption, good gut flora and consumption of a protein rich nutrient dense diet, to take much better advantage of the lower amounts of those vitamins.
The high Omega 3s/essential fatty acids in the Inuit diet likely offsets deficiencies to a great extent and contributes greatly to apparent abundant health, at least in the short run, for those Inuit who remain on their traditonal diet. I would also observe that the Inuit live an active and simple life in an environment that is largely free of toxins and pollution.
I think that there is also another vital consideration: In general, man has the ability to survive and even apparently thrive, at least over the short run, on a diet that is deficient in one or more vital nutrients. Like an advanced version of the space shuttle, our bodies have backups and backups to backups so that it can make adjustments when it is not being nourished properly. Also, like the space shuttle, there is a price to pay in terms of lifespan when backup systems are used for prolonged periods.
One stark example is the famous (I would say infamous) Adkins no-carb diet. People can appear to thrive on the diet for years, but too often the long term result is serious health issues and shorter lifespans. Unlike the original hardcore Adkins no-carb diet, traditonally the Inuit did consume some carbs when available in the form of small amounts of fruits and berries. Apparently that may have been enough to keep them from being in a constant state of ketosis.
When the Inuit were first studied in the 1920's and 30's by Dr. Vilhjalmur Stefansson their average lifespan was only 30-35 years. Not exactly a wonderful figurel, though perhaps not that far out of line with lifespans around the globe at the time. Now, thanks to the introduction of SADs type items to their foods, they have what may be the worst of both worlds, and they continue to lag behind in lifespan. The average lifespan of the Inuit in the Quebec region is the lowest for all of Canada.
So, I would have to say that I am far from sold on how healthy the Inuit diet is and, like you, no matter how healthy the Innuit may or may not be, a diet of whale blubber and little or no vegetables will not ever be my cup of tea!
You do not get sufficient vitamin D for optimal levels from foods (except such as cod liver oil on which you can overdoes too), only sunshine.
Pastured animal fat has plenty of D3. Pastured Pork fat has 2800IU for 100g.
That is all well and good for those who are able to grow their own food in soils that are optimally mineralized and then plan and consume carefully. For the vast majority of people that is either not something they are able to do or else something that is highly impractical to do. So, the next best thing is to make sure you are getting optimal amounts of all the vital vitamins, minerals and other nutrients on a daily basis by eating as healthily as possible and supplementing with items that are derived from whole food sources.
I have challenged people who say that all one has to do to get even adequate (as opposed to optimal) amounts of vitamins, minerals and other nutrients is to eat a healthy diet to provide a one week diet plan of 2000 to 2500 calories a day which will do that. Thus far, no one has even attempted to do it, because for all intents and purposes it cannot be done with the processed food and mineral depleted produce available at our grocers.