Lessons From Ötzi, the Tyrolean Ice Man. Part II

Otzi's Diet

Otzi's digestive tract contains the remains of three meals.  They were composed of cooked grains (wheat bread and wheat grains), meat, roots, fruit and seeds (1, 2).  The meat came from three different animals-- chamois, red deer and ibex.  The "wheat" was actually not what we would think of as modern wheat, but an ancestral variety called einkorn.

Isotope analysis indicates that Otzi's habitual diet was primarily centered around plant foods, likely heavily dependent on grains but also incorporating a variety of other plants (3).  He died in the spring with a belly full of einkorn wheat.  Since wheat is harvested in the fall, this suggests that his culture stored grain and was dependent on it for most if not all of the year.  However, he also clearly ate meat and used leather made from his prey.  Researchers are still debating the quantity of meat in his diet, but it was probably secondary to grains and other plant foods. It isn't known whether or not he consumed dairy.

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What Causes Insulin Resistance? Part II

In the last post, I described how cellular energy excess causes insulin resistance, and how this is triggered by whole-body energy imbalance.  In this post, I'll describe another major cause of insulin resistance: inflammation. 

Inflammation

In 1876, a German physician named W Ebstein reported that high doses of sodium salicylate could totally eliminate the signs and symptoms of diabetes in certain patients (Berliner Klinische Wochenschrift. 13:337. 1876). Following up on this work in 1901, the British physician RT Williamson reported that treating diabetic patients with sodium salicylate caused a striking decrease in the amount of glucose contained in the patients' urine, also indicating an apparent improvement in diabetes (2).  This effect was essentially forgotten until 1957, when it was rediscovered.

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Flu Season is Here

I've noticed everyone around me getting sick lately (I seem to have become mostly immune to colds and the flu in the last couple of years), so I took a look at Google Flu Trends. Lo and behold, the United States is currently near peak flu incidence for the 2010-2011 season. Here's a graph from Flu Trends. This year's trend is in dark blue:


Flu Trends also has data for individual US states and a number of other countries.

It's time to tighten up your diet and lifestyle if you want to avoid the flu this year. Personally, I feel that eating well, managing stress effectively, and taking 2,000 IU of vitamin D3 per day in winter have helped me avoid colds and the flu.

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Vitamin D May Prevent Flu and Asthma

The AJCN just published a new controlled trial evaluating the effectiveness of vitamin D supplements on flu and asthma (1). Dr. Hiroyuki Ida's group gave Japanese schoolchildren (10 years average age) 1,200 IU of vitamin D3 or placebo per day from December through March. They found that children taking vitamin D had a significantly lower incidence of influenza A but not influenza B. These are two strains of flu that each accounted for roughly half the flu incidence in this population. Sadly, if you add the total flu incidence for A and B together (which the authors don't do in their tables), vitamin D supplementation didn't reduce total flu incidence significantly.

They also found that in the subset of children not already taking vitamin D supplements, the effect was greater, with unsupplemented children contracting nearly three times as many influenza A infections as children receiving vitamin D. They didn't analyze the influenza B or total influenza incidence in that way, so we don't know if prior supplementation makes a difference there.

The most striking finding of the paper is that the vitamin D group suffered from 6 times fewer asthma attacks than the placebo group. This needs to be repeated but it's consistent with other data and I find it very encouraging.

The paper did have some limitations. They didn't measure vitamin D status so they have no way to know exactly how effective their pill-based supplements were.

Another problem is that they began collecting data immediately after beginning supplementation. Vitamin D is a fat-soluble vitamin that can take 3 months to reach maximum concentration in the body following supplementation. By the time the children were reaching their maximum serum concentration of vitamin D, the trial was over. It would be nice to see the next trial begin supplementation in the fall and look at flu incidence in the winter.

This paper comes on the heels of another showing that vitamin D is necessary for the activation of an immune cell called the killer T cell (2). These are important for resistance to infections and cancer. Overall, these papers add to the accumulating evidence that vitamin D is important for the proper functioning of the human immune system. However, mice may not be the best model for use in studying vitamin D biology. From the first paper:

The evolution of different mechanisms for the regulation of PLC-γ1 activity in human and mouse T cells parallels the development of divergent VDR-dependent and VDR-independent antimicrobial pathways in human and mouse macrophages31, respectively, and may reflect the fact that mice are nocturnal animals with fur and humans are daytime creatures that synthesize vitamin D in the skin after exposure to ultraviolet light.

In other words, mice don't use vitamin D in the same way as humans because they have a different evolutionary relationship to it.

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NATURAL HERB THAT CONTROLS INTERNAL BLEEDING

Capparis Spiosa ( Caper bush ) is an astringent diuretic, expectorant herb that is regarded as a stimulating tonic. It is native to tropical and subtropical regions.


As a herbal remedy, the parts used are the root bark, flower buds and fruits. Internally Capparis is used for gastrointestinal infections, diarrhoea, skin problems, fragile capillaries, internal bleeding, gout, and rheumatism. Externally for eye infections.

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UNUSUAL REMEDIES

Pfaffia ( Amaranthaceae ). This herb is grown in Central and Southern America and is known as Brazilian Ginseng. The roots have been used by natives as a cure all, but more widely as a tonic aphrodisiac.


Pfaffia has been used internally for stress, chronic fatigue,debility, poor appetite, Epstein-Barr disease, glandular fever, infertility, impotence, menstrual and menopausal problems, diabetes, pancreas dysfunctions, ulcers, rheumatism, hypertension, cardiovascular disease, nervous disorders, chronic degenerative disease, and various kinds of cancer. Also to improve resistance to infection and increase stamina.


Extracts are added to food supplements and herbal tonics.

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More unusual herbal remedies.

Pau D'arco (Tabevulia) is a South American bitter herb which is antibacterial, antifungal and a booster of the immune system. It has traditionally been used to control candida (thrush) and help in the treatment of cancer. It is also used to cleanse the blood, treat liver disease, infections, diabetes, ulcers, allergies and tumours.
Pau D'arco is available as tea bags in many health food shops.

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My own experience in curing illness, infection and viruses.

I am posting this blog not to promote my own blog but as information on my own experiences with regard to illness, disease, infections and viruses.
If you have been following my blog you may be aware of the confidence I have in high doses of vitamin c. The recommended dosage of vitamin c in the UK for a healthy adult is 60mg, which I regard as far too low. I usually take 500mg per day as a supplement to maintain good health, however if I feel unwell I will up this amount until I feel better.

Now I am not a doctor, so please seek advice before taking high doses of vitamin c. You may find the following story interesting.

Last Thursday I felt very tired and had just started with a sore throat I had already taken my daily dose of vitamin c (500mg), I then took another 1,000mg, however by lunch time I was feeling very hot, as if I had a temperature. I was feeling quite unwell so I took another 2,000mg of vitamin c and had to take to my bed. By the evening I took a further 2,000mg of vitamin c, and then went to bed again.

By the next morning I was feeling fine, no sore throat or temperature, and I was not feeling tired. This may have happened anyway, however it is not the first time this has happened,and my own opinion is that the high dosage of vitamin c is boosting my immune system and fights of the illness very quickly.

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Use antibiotics only if your desperate

The general advice from your doctor will be that you don't need antibiotics for a cold or even flu, unless there are complications, and this is good advice. Antibiotics if overused are not good for you and if you do overuse them they simply will not work.

My wife told me an interesting story yesterday, and this is true. Her friends mother, who is in her early seventies has been lucky enough to have never taken antibiotics in her life. Unfortunately due to a disease she has had to have part of her foot removed. She was given antibiotics to prevent infection, but because she has never had antibiotics before the healing process has been amazing, and she is feeling much better.

S0 the moral to the story is don't take antibiotics unless you are desperate. If you do need to take antibiotics it may be better to eat live yogurt after you have completed the course, as the antibiotics will kill off the good bacteria in your gut as well as the bad.

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Nutrition and Infectious Disease

Dr. Edward Mellanby's book Nutrition and Disease contains a chapter titled "Nutrition and Infection". It begins:

There is general agreement among medical men that the susceptibility of mankind to many types of infection is closely related to the state of nutrition. The difficulty arises, when closer examination is given to this general proposition, as to what constitutes good and bad nutrition, and the problem is not rendered easier by recent advances in nutritional science.

Dr. Mellanby was primarily concerned with the effect of fat-soluble vitamins on infectious disease, particularly vitamins A and D. One of his earliest observations was that butter protected against pneumonia in his laboratory dogs. He eventually identified vitamin A as the primary protective factor. He found that by placing rats on a diet deficient in vitamin A, they developed numerous infectious lesions, most often in the urogenital tract, the eyes, the intestine, the middle ear and the lungs. This was prevented by adding vitamin A or cabbage (a source of beta-carotene, which the rats converted to vitamin A) to the diet. Mellanby and his colleagues subsequently dubbed vitamin A the "anti-infective vitamin".

Dr. Mellanby was unsure whether the animal results would apply to humans, due to "the difficulty in believing that diets even of poor people were as deficient in vitamin A and carotene as the experimental diets." However, their colleagues had previously noted marked differences in the infection rate of largely vegetarian African tribes versus their carnivorous counterparts. The following quote from Nutrition and Disease refers to two tribes which, by coincidence, Dr. Weston Price also described in Nutrition and Physical Degeneration:

The high incidence of bronchitis, pneumonia, tropical ulcers and phthisis among the Kikuyu tribe who live on a diet mainly of cereals as compared with the low incidence of these diseases among their neighbours the Masai who live on meat, milk and raw blood (Orr and Gilks), probably has a similar or related nutritional explanation. The differences in distribution of infective disease found by these workers in the two tribes are most impressive. Thus in the cereal-eating tribe, bronchitis and pneumonia accounted for 31 per cent of all cases of sickness, tropical ulcers for 33 per cent, and phthisis for 6 per cent. The corresponding figures for the meat, milk and raw blood tribe were 4 per cent, 3 per cent and 1 per cent.

So they set out to test the theory under controlled conditions. Their first target: puerperal sepsis. This is an infection of the uterus that occurs after childbirth. They divided 550 women into two groups: one received vitamins A and D during the last month of pregnancy, and the other received nothing. Neither group was given instructions to change diet, and neither group was given vitamins during their hospital stay. The result, quoted from Nutrition and Disease:

The morbidity rate in the puerperium using the [British Medical Association] standard was 1.1 per cent in the vitamin group and 4.7 in the control group, a difference of 3.6 per cent which is twice the standard error (1.4), and therefore statistically significant.

This experiment didn't differentiate between the effects of vitamin A and D, but it did establish that fat-soluble vitamins are important for resistance to bacterial infection. The next experiment Dr. Mellanby undertook was a more difficult one. This time, he targeted puerperal septicemia. This is a more advanced stage of puerperal sepsis, in which the infection spreads into the bloodstream. In this experiment, he treated women who had already contracted the infection. This trial was not as tightly controlled as the previous one. Here's a description of the intervention, from Nutrition and Disease:

...all patients received when possible a diet rich not only in vitamin A but also of high biological quality. This diet included much milk, eggs, green vegetables, etc., as well as the vitamin A supplement. For controls we had to use the cases treated in previous years by the same obstetricians and gynecologists as the test cases.

In the two years prior to this investigation, the mortality rate for puerperal septicemia in 18 patients was 92%. In 1929, Dr. Mellanby fed 18 patients in the same hospital his special diet, and the mortality rate was 22%. This is a remarkable treatment for an infection that was almost invariably fatal at the time.

Dr. Mellanby was a man with a lot of perspective. He was not a reductionist; he knew that a good diet is more than the sum of its parts. Here's another quote from Nutrition and Disease:

It is probable that, as in the case of vitamin D and rickets, the question is not simple and that it will ultimately be found that vitamin A works in harmony with some dietetic factors, such as milk proteins and other proteins of high biological value, to promote resistance of mucous membranes and epithelial cells to invasion by micro-organisms, while other factors such as cereals, antagonise its influence. The effect of increasing the green vegetable and reducing the cereal intake on the resistance of herbivorous animals to infection is undoubted (Glenny and Allen, Boock and Trevan) and may well indicate a reaction in which the increased carotene of the vegetable plays only a part, but an important part.

And finally, let's not forget the effect of vitamin D on infection resistance. Low vitamin D is consistently associated with a higher frequency of respiratory infections, and a controlled trial showed that vitamin D supplements significantly reduce the occurrence of flu symptoms in wintertime. Vitamins A and D are best taken together. Did someone say high-vitamin cod liver oil??

P.S.- I have to apologize, I forgot to copy down the primary literature references for this post before returning the book to the library. So for the skeptics out there, you'll either have to take my word for it, or find a copy of the book yourself.

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