You'll have to forgive KD. Judging from the above remarks, he is clearly a deluded, religiously devout believer in the "Noble Savage" theory. This theory insists, blindly(with very poor, highly biased evidence), that hunter-gatherers were supposedly icons of physical and spiritual perfection exhibiting perfect health(lol), and that "therefore" we should adopt all or most of those hunter-gatherer practices. These Noble-Savage-adherents never once consider that HGs(Hunter-Gatherers) practised numerous customs which were either useless or harmful to humans such as cannibalism(
http://en.wikipedia.org/wiki/Kuru_(disease) ) or male circumcision.
All people can correctly state about HGs is that their diets were (often, though not always) "less worse" than modern diets and that their levels of daily exercise was also greater, thus meaning that they were healthier than modern SAD/SMD eaters. That's all. HGs routinely cooked their foods so would have been taking in plenty of heat-created toxins, which have been scientifically verified as causing harm to human health. While, admittedly, exercising and fasting have been shown to reduce the levels of one type of heat-created toxin(ie advanced glycation end products), that does NOT mean that HGs were somehow magically "immune" to the effects of heat-created toxins derived from cooking.
Here's a good debunking of the widely-discredited Noble-Savage theory in general:-
http://www.edge.org/3rd_culture/pinker07/pinker07_index.htmlhttp://snarkypenguin.blogspot.com/2007/04/myth-of-noble-savage.htmlBack to dairy:-
The main problem with dairy is that 75% of the world's population are lactose-intolerant. Now, people claim that some of those report having no issues with raw dairy. I suspect this is inaccurate. I have often come across people who claimed that they did fine on raw dairy for a years, before finally admitting that raw-dairy-consumption affected their health slightly negatively in some way. So I reckon that minority still have problems but they are merely significantly reduced.
There are all sorts of old-wives' tales about putting raw honey in the raw milk or consuming raw dairy at room-temperature etc., but most of those don't work, and the one or two that do only improve things for a small segment of those who do badly on dairy.
Then there are those who are casein-intolerant. Simply put, cows' milk has way more casein in it than human milk and a wholly different profile. It also has some nasty hormones which harm human health. Then there's the issue of the excess calcium in it. If too much calcium is absorbed into the body and not enough magnesium(easily achieved on a diet high in raw dairy) then, over time, magnesium-uptake into the body gets blocked, and magnesium-deficiency results. Which is why some long-term Primal Dieters admitted, on the Primal Diet yahoo group, that they ate magnesium-rich raw pumpkin seeds to compensate for this potential problem.
Beyondveg.com talks about how the adaptation to dairy is not really genetic in origin, thus debunking KD's erroneous assumption re dairy in his last post:-
"Incompatibilities between dairy
consumption and human physiology
*** "...for our purposes here, the example [of lactose tolerance having developed within 1,150 years in some segments of the population] does powerfully illustrate that genetic adaptations for digestive changes can take place with much more rapidity than was perhaps previously thought."
The estimate of 1,150 years is from the Cavalli-Sforza data. A somewhat more conservative estimate based on the prevalence of lactose tolerance in those of Northern European extraction is that the gene for adult lactose tolerance would have increased from 5% to 70% prevalence within about 5,000 years (approx. 250 generations). [Aoki 1991]
Genetic changes due to "neoteny" (such as adult lactose tolerance) not indicative of overall rates of adaptation. Even while these data for relatively quick evolutionary changes resulting in adult lactase production remain essentially true, however, an important point that should be clarified is that the gene for lactase production is already present and expressed in all humans (for breastfeeding) up through the time of weaning. Therefore, for lactase production to continue into adulthood would require only relatively small changes in the gene, e.g., via the process known as "neotenization" (the retention of juvenile traits into adulthood). Thus, "brand-new" traits, so to speak, unlike polymorphisms such as the gene for lactase production which already exist (even if not in a form previously expressed in adults) would take much longer to evolve.
Additional indications of incongruence between dairy and human physiology. Further, beyond the question of lactose tolerance, I have since learned there would be many additional genetic changes required (than just that for lactose tolerance) to result in more complete adaptation to milk consumption. A number of recent studies demonstrate problems of milk consumption that go considerably beyond whether or not a person is capable of handling lactose:
* Lactose and heart disease. One is that lactose itself is a risk factor for heart disease, since in appreciable quantities it induces copper deficiency which, in turn, can lead through additional mechanisms to heart pathologies and mortality as observed in lab animals.
* Poor Ca:Mg ratio which can skew overall dietary ratio. Another problem is the calcium-to-magnesium ratio of dairy products of approximately 12:1, which is directly at odds with the ratio of 1:1 from a Paleolithic diet composed of meats, fruits, and vegetables. Depending on the amount of milk in the diet, the resulting overall dietary ratio can go as high as 4 or 5:1. This high ratio leads to reduced magnesium stores, which have the additional ramification of increasing the risk of coronary heart disease, since magnesium helps to lower levels of blood lipids (cholesterol), lower the potential for cardiac arrthymias, lower the oxidation of LDL and VLDL cholesterol (oxidation of cholesterol has been linked to atherosclerosis), and prevent hyperinsulinism. (More about hyperinsulinism shortly below.)
* Saturated fat. Milk has also been linked to coronary heart disease because of its very high saturated fat content.
* Molecular mimicry/autoimmune response issues. Additionally, autoimmune responses are being increasingly recognized as a factor in the development of atherosclerosis. In relation to this, research has shown milk to cause exceptionally high production of certain antibodies which cross-react with some of the body's own tissues (an autoimmune response), specifically an immune response directed against the lining of the blood vessels. This process is thought to lead to atherosclerotic lesions, the first step that paves the way for consequent buildup of plaque.
[See Part 2 of Loren Cordain, Ph.D.'s posting of 10/9/97 to the PALEODIET list (relayed to the list and posted by Dean Esmay) for details and references relating to the above points about dairy consumption.]"
As you can see from the above, lactose causes copper deficiency, thus leading to heart-disease. The saturated fat claim, however, is clearly only an issue with pasteurised dairy, not raw dairy.
And milk is certainly NOT "found in Nature", it is something that requires domestication of an animal to be eaten regularly.