The number one nutrition science story of 2010 actually occurred in late 2009, but it really didn’t get the notice it deserved until early 2010.
In October 2009, Dr. Bruce Ames and his research team from Children’s Hospital Oakland Research Institute in Oakland, California, published the article Vitamin K, an example of triage theory: is micronutrient inadequacy linked to diseases of aging? in the October 2009 issue of the American Journal of Clinical Nutrition.
While some insiders immediately recognized the importance of this paper, it wasn’t until February 2010, when Dr. Ames was interviewed in the nutritional supplement trade publication, NutraIngredients, that his breakthrough article finally got the attention it deserved.
What Dr. Ames and his colleagues accomplished was nothing short of amazing. First, they were able to prove that Dr. Ames “triage” theory for macronutrients—a theory that suggests the body prioritizes the use of scarce micronutrients in favor of short-term survival at the expense of long-term health—was indeed correct.
Secondly, they were able to clearly demonstrate that the current recommendations for vitamin K intake needs to be increased to prevent heart disease, osteoporosis, and ensure optimal human health.
Dr. Ames first presented his triage theory of aging back in 2006. At that time, it was just a theory and Dr. Ames did not have the clinical data to support it. But to him, the theory made perfect sense and he knew it was just a matter of time before he could prove it.
What his triage theory says is, like Robin Hood, when the body requires nutrients for short-term health and reproduction, it robs them from organs that are nutrient rich and of lesser importance in order to sustain major organs that are nutrient poor.
FDA Vitamin K Recommendations Too Low!
The FDA’s RDI for vitamin K is 90 mcg per day. However, that amount is strictly based on what is required for healthy blood coagulation and does not take into consideration the amounts required by the body to process calcium for proper bone building, osteoporosis prevention, and protect the heart from atherosclerosis.
Some scientists are recommending adult daily vitamin K doses for maintaining optimal health as follows:
- Vitamin K1 (phylloquinone) 240 mcg
- Vitamin K2 (menaquinone-7) 45 mcg
In addition, it should be noted that these are still on the low end of the vitamin K spectrum. People who get no vitamin K from their diets might consider dosages at double or even triple these amounts.
For example, Dr. Ames says, “If you’re short of iron, you take it out of the liver before you take it out of the heart because if you take it out of the heart, you’re dead. But the downside is, doing this causes long-term DNA damage, which doesn’t show up as cancer for 20 years.”1
“If you’re deficient for years your body weakens, DNA becomes damaged and you get sick and eventually die.” Dr. Ames adds, “If you want maximum life span, your micronutrient needs must be met throughout life.”
So Ames and his team set out to prove his theory and they chose vitamin K as the first place to start because they already knew vitamin K deficiency is quite widespread.
What they found was truly frightening. When the supply of vitamin K was limited, as it is in the typical American diet, the body utilizes what little it can find to protect critical metabolic functions in the liver. Unfortunately, that leaves other vitamin K-dependent proteins, the ones associated with bone building, cancer prevention, and protecting the heart from atherosclerosis, without sufficient vitamin K to function properly. The result of this leaves the body at risk for developing age-related diseases like cancer, heart disease, and osteoporosis.
Unfortunately, current FDA recommendations for vitamin K (90 mcg/day for adults) are based on levels to ensure adequate blood coagulation, but fail to ensure long-term optimal levels.
From Ames’ triage perspective, much of the population, and patients who are taking warfarin/Coumadin (blood thinners), are not receiving sufficient vitamin K for optimal long-term health.2
“A triage perspective reinforces recommendations of some experts that much of the population, along with warfarin/Coumadin patients, are not getting sufficient vitamin K for optimal function of vitamin K dependent proteins that are important to maintain long-term health,”wrote Dr. Ames.
What you should know about Vitamin K
Vitamin K is a fat-soluble vitamin, meaning it is stored in fatty tissue in the body. Vitamin K is known as the clotting vitamin because without it blood would not clot.
It is important to note, that while Dr. Ames’ study looked at the body’s vitamin K usage as a whole, there are actually two forms of vitamin K, known as vitamin K1 (phylloquinone) and vitamin K2 (menaquinone).
Vitamin K1 is found in green leafy vegetables such as lettuce, broccoli and spinach, and makes up about 90% of the vitamin K consumed in the diet. Vitamin K2 accounts for the other 10% and can be found in meat, and fermented food products like cheese, and natto. However, as stated before, most people do not get enough vitamin K (both K1 and K2) from food sources and most multivitamin supplements contain little if any vitamin K.
This deficiency is putting the vast majority of the population at risk for age-related disease like arterial calcification, osteoporosis and bone fracture, and cancer.
And because of this breakthrough research, “Dr. Ames’ triage theory for vitamin K” is the number one nutrition science story for 2010!
- Downey, Michael. The triage theory offers a new look at aging. Natural Foods Merchandiser. Jan. 1, 2007
- McCann JC, Ames BN, Vitamin K, an example of triage theory: is micronutrient inadequacy linked to diseases of aging? Am J Clin Nutr. 2009 Aug 19. [Epub ahead of print]