Cod Liver Oil
For years, I have recommended cod liver oil as a dietary supplement to support vitamin D levels are healthy. However, based on the discoveries recently, I renew my recommendations regarding cod liver oil, because he may not serve you as good as previously believed.
My previous recommendation was based on the fact that cod liver oil contains vitamins D and A in addition to fat-omega-3 fats are healthy. These vitamins are essential for most of each person who can not obtain regular sun exposure throughout the year.
But recent research has found that the ratios of two of these vitamins is probably the highest importance in order to explore the benefits of optimal health, and unfortunately, modern cod liver oil does not supply vitamin- these vitamins in a healthy ratios to each other.
What You Need To Know About Vitamins, Vitamin A and D in Cod Liver Oil ?
At least 2.000 genes, or nearly 10% of your genes, have been identified that are directly influenced by vitamin D, which in turn have an impact on a wide variety of health problems, from preventing colds and flu are common to prevent at least 16 different types of cancer. There is even evidence linking vitamin D in the process of brain detoxification of heavy metals like mercury.
Widespread vitamin D deficiency also strongly been linked to epidemics of autism, asthma, and diabetes type 1 and 2, childhood.
Vitamin A, which is important for your immune system just like vitamin D, is also a pioneer in the active hormones that regulate the expression of your genes, and they work together.
For example, there is evidence that without vitamin D, vitamin A can be ineffective or even toxic. But if you are deficient in vitamin A, vitamin D also can not function properly.
There are many problems with modern cod liver oil, but one of the main thing is that there is no standard definition of what represents the cod liver oil. Manufacturers are free to add or subtract as much vitamin A or D as they see appropriate. The truth is found in cod liver oil tailor-tailor from England several hundred years ago with the starving children who drank and scientists noted they do not get rickets (rickets rickets or disease-English). Cod liver oil is in fact a highly processed food that never consumed by humans before.
Main justification Why You Should Avoid Cod Liver Oil (Cod Liver Oil)
There have been two meta-analyzes a recently conducted. The first showed that people who take supplements of vitamin A in cod liver oil, or in supplements, have a 18 percent increase in mortality rates. Another study showed that unlike third-world countries where vitamin A supplementation appears to reduce infections, vitamin A supplementation on developed countries like the U.S. actually increased infections.
The researchers believe is caused by nutritional deficiencies that massive third world as most of their calories are derived from whole grains, and they did not have the opportunity to consume as much fresh fruit, fresh vegetables , butter, eggs and other foods that contain vitamin A which is obtained by those who have advanced in the world.
In fact researchers could not find any deficiency of vitamin A at all, but Kaira about 5% had vitamin poisoning. The converse is true in the third world where vitamin A poisoning is not unheard of, but vitamin A deficiency spread.
In addition to a new study has shown that vitamin D protects against cancer. But the paradox is found when their vitamin D levels are higher does not seem to have this benefit. Brilliant Harvard researchers carefully analyzed the data in the study that showed this and found that if he took out those levels of vitamin A and vitamin D are high, those with levels of vitamin A which is normal and levels of vitamin continues to have a high D reduced the risk of colon cancer. So those who do not take vitamin A has a protective effect of vitamin D levels are higher.
Other studies now show a link between high levels of vitamin A and osteoporosis. In fact many Scandinavian countries which regularly to supplement with cod liver oil has a blindly osteoporosis even if they obtain sufficient amounts of vitamin D orally.
Dr. John Cannell, head of the Vitamin D Council, along with 15 other researchers, recently issued an article "Cod Liver Oil, Vitamin A poisoning, infections Respiratory Frequently, and Vitamin D Deficiency Epidemic" in the November issue of Annals of Otology, Rhinology and Laryngology. In this paper Dr. Cannell raised questions about the efficacy of cod liver oil caused by the amount of vitamin A are highly variable and often redundant. In typical modern cod liver oil contains much less vitamin D than it should, due doedorisasi processes used today are spending a lot of these essential nutrients.
Dr. Cannell and other prominent researchers believe the vitamin A contained in cod liver oil is mostly redundant, and can reduce the effectiveness of vitamin D by blocking the binding of its active form in your DNA, effectively preventing its ability to regulate the expression of genes responsive to vitamin D you.
The Weston Price Foundation, where I was a member of the advisory, holding opposing views. They believe vitamin D can only be effectively hit the target genes when activated by a partner receptor vitamin A. If vitamin A is not present, certain molecules, called co-repressors bind to the receptor-receptor and prevent vitamin D function. Is their position that the cod liver oil is a supplement that is still highly recommended.
After reviewing the evidence, I personally believe that there is enough vitamin A present in the American diet to facilitate the activation of vitamin D is enough. It seems not the case in third world countries-neara, where cod liver oil, or some other supplements of preformed retinol, will still be useful.
Most of Cod Liver Oils Vitamin A Which Have Overstated (preformed Retinol)
However, even the Weston Price Foundation recognizes that there are versions of the dangers of cod liver oil out there, even from some companies are very reputable to make cod liver oil is clearly excessive in vitamin A where he only had 3 to 60 units of vitamin D per tablespoon but between 150 and 12,000 times more vitamin A.
This is a difficult balance.
Both vitamins are essential to obtain the benefits of optimal health, however, the ratios can become unbalanced in danger - similar omega-3/omega-6 balance, which has been reversed in our modern diet.
Almost all brands of cod liver oil provide the amount of vitamin D is proven, typically no more than 400 to 1,200 IU of vitamin D per tablespoon but approximately between 4.000 to 30,000 IU of vitamin A. This obviously is not true. Roughly the ratio of the lowest I've seen is ten times more vitamin A than vitamin D, but, as I mentioned above, it can be as high as 12.000 times more vitamin A.
First of all, this clearly is not sufficient amount of vitamin D for even the smallest child. This part caused by the recommendations of the government, which is far too low to provide any health benefits; the recommended daily dose is no more than 200 to 600 IU, depending on age. Meanwhile, researchers since then has established that the therapeutic dose is approximately between 2.000 to 10,000 IU per day, depending on your weight and other factors, such as skin color and level of regular sun exposure. (Some people may require, and can be safely 20,000 IU per day.)
Consuming high amounts of vitamin A as this is contained in cod liver oil and most multi-vitamins, while not acquiring nearly enough vitamin D, coupled with the fact that most people are deficient in vitamin D to begin with, can be potentially cause vitamin A is toxic.
Concerns that belongs to Dr. Cannell and other researchers is that the vitamin A in cod liver oil is overkill and actually against vitamin D by blocking the binding of its active form on DNA and so preventing its ability to regulate the expression of genes that respond to vitamin D.
The strong belief of The Weston Price Foundation is that vitamin A is absolutely not toxic but it is necessary for optimal vitamin D function. However they believe there is sufficient vitamin A in the diet of most Americans, especially if they take a multivitamin. In the third world is not the case and they will most likely benefit from supplementation of vitamin A.
The Weston Price Foundation do not agree with the conclusions of Dr.. Cannell that cod liver oil itself may cause vitamin A toxicity, however they also do not recommend taking any cod liver oil that low vitamin D. But even their recommendations, in my opinion have the amounts of vitamin D are far too low to be useful clinically. But it seems more important that high amounts of vitamin A may limit the effective of vitamin D even if it is taken in addition to what is acceptable in the cod liver oil.
Although it is still unclear exactly where the balance that must exist, Dr. Cannell and most of the researchers are prominent experts in these areas believe that the ratios of the two essential nutrients are likely to be reversed from that typically seen in the cod liver oil, because you need the amounts are far more of vitamin D than vitamin A.
After carefully reviewing the arguments on both sides of the issue of Dr. I'm sure that approach. Cannell is much more likely to be consistent with producing high levels of health and reducing disease.
Recommendations Cod Liver Oil I The Revised
Because the prevalence of vitamin A deficiency (which would benefit from cod liver oil) in the United States is much lower than the prevalence of subclinical vitamin A poisoning, while most everyone is suffering from vitamin D deficiency, I strongly recommend taking no more cod liver oil good for adults and children alike.
However, if you want to use cod liver oil I would recommend that of Carlson because they have the best ratio of vitamin A on vitamin D. He is the only one I know with the correct ratio, approximately four to five times more vitamin D from vitamin A. We no longer sell cod liver oil on our website but Carlson is available at many health food stores.
You most likely get vitamin D you need if you regularly consume fresh vegetables high nutrients, such as yams, sweet potatoes, carrots, cantaloupe, cantaloupe, and fruits and other vegetables full of color, and butter, especially, if obtained from cows fed grass.
Although you can get Vitamin D from your diet, it is extremely difficult, and I believe it is very unnatural. It is my strong belief that we are designed to obtain almost all of our vitamin D from exposing the appropriate areas of our skin to sunlight. If this is not possible, the next best option is exposure to UVB rays from tanning beds are safe, and if it is not possible then one should choose a supplement of vitamin D3 is high quality.
Such circumstances, it is my strong belief that you did not get the right balance of vitamin A on vitamin D from cod liver oil, which is why I believe it is best to avoid it.
Please note that this new recommendation does not apply to both fish oil (fish oil) or krill oil (krill oil), because none of them contain vitamins A or D, but rather are the perfect sources of omega fats -3 important. Everyone still needs a regular source of high quality of nutrients that is absolutely essential and vital.
Another potential point of confusion is that beta carotene is not a problem, because it is a PRE vitamin A. Your body absolutely will not change too much beta carotene to excessive levels of vitamin A. So take beta carotene supplements will not interfere with vitamin D.
