Posts Tagged ‘vitamin D’
« Older Entries |Vitamin D Debacle
Monday, December 6th, 2010
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by Dr. Leslie Fuller
Nature Cures Clinic physician
We have heard a lot of questions this week concerning the recently released Institute of Medicine’s (IOM) ‘new and improved’ recommendations for Vitamin D and Calcium intake. While the Institute’s recommendations about Calcium seem to be agreed upon by most, the recommendations released for Vitamin D have caused quite a stir in groups of health care providers across the country. 
To begin with, let’s review what Vitamin D does for us. Whether through dietary intake or good old sunshine, once active Vitamin D has gotten into our systems, it plays a very valuable role. Our immune system is greatly influenced by D, to the tune of increased and enhanced immune cell function. Vitamin D also assists with the very intricate regulation of calcium in the body— so without it, calcium cannot be absorbed nor integrated into our bones, therefore decreasing the integrity of our skeletal system (which, as it turns out, is actually pretty important to us). The uncontrolled dividing of cells (a.k.a. rapid proliferation) and lack of cellular differentiation, which leads to the formation of cancers in the body, can be halted by the active form of Vitamin D. It also plays a role in blood pressure regulation and insulin secretion as well as a host of other functions. (To find out more, read a little here)
The actual IOM report is quite a tome, at a total of 990 pages long. (If you have a free weekend, take a gander for yourself.) To be honest, I did NOT comb through all 100 of the research articles that the IOM used to make its recommendations. But here are the basic recommendations:
Raise the suggested daily intake from 400 to 600 IUs of Vitamin D. The other half of the research is focused on the suggested Calcium supplement intakes (Not taking into account food-based Calcium, how you prepare that food and what types of foods…). At the end of it all, the researchers are saying that the recommended intake is 600 IUs (800 in the elderly, 400 in wee ones), but the upper tolerable limit, where “the risk of harm increases,” is 4,000 IU per day. I feel that the intake recommendations are overly conservative, and quite limiting in light of the potential benefits that Vitamin D can offer.
The IOM is also recommending that threshold for Vitamin D testing be at the 20 ng/ml level. We generally like to see the levels around 80 ng/mls, but most people in the Northwest clock in around 20-30 on an initial screen. Many of the studies quoted and used to formulate the new recommendations are based in toxicity studies. It looks like the toxicity studies that they used for adults all included doses of Vit D of 100,000 to 150,000 IUs of Vitamin D a day for anywhere from 3-4 weeks to several years years… increasing the blood levels up anywhere from 150 to the 1000’s. This is way too high! Other studies used are based off of cases of accidental over-fortification, which is very different than the supplemental Vitamin D that our patients have come to know and love. Overall, not the most convincing body of evidence to base new lab levels on.
The best rebuttal to the statements made in the research came from the Vitamin D Council. It is fairly humorous and mildly thick with disgust for claimed data mis-interpretation and deletion that is in the IOM statement. Here are the salient response jabs:
–”After 13 year of silence, the quasi governmental agency, the Institute of Medicine’s (IOM) Food and Nutrition Board (FNB), today recommended that a three-pound premature infant take virtually the same amount of Vitamin D as a 300 pound pregnant woman.”
–“As a single, 30 minute dose of summer sunshine gives adults more than 10,000 IU (250 micrograms), the FNB is apparently also warning that natural Vitamin D input — as occurred from the sun before the widespread use of sunscreen — is dangerous. That is, the FNB is implying that God does not know what she is doing.”
–“Today, the FNB has failed millions of pregnant women whose as yet unborn babies will pay the price. Let us hope the FNB will comply with the spirit of “transparency” by quickly responding to our Freedom of Information requests.”
Another great article on the topic came from the Huffington Post , from Dr. David Katz, whose work I generally enjoy and whose articles seem to have a natural-based-bent to them.
His summary is as follows:
“Calcium and vitamin D are important nutrients. As with all nutrients, enough is good — too little or too much is bad. The IOM invokes the precautionary principle to offer recommendations that are reasonable, and willfully conservative. But a relative absence of evidence means that guidance is as much about judgment as science.”
I think at the end of it all, what I am falling back on is that checking patients’ blood levels, like any therapy we initiate, is key. Yes, 5,000 to 10,000 IUs of Vitamin D for YEARS and YEARS might be too much (again, not enough data to support or negate). But keeping people on 1000 to 4000 daily as a maintenance dose (and, of course, using higher doses when clinically needed) while keeping blood levels in check, is JUST FINE.
Especially in Portland, where our 2 months of partial sun in 2010 has us all a little cranky and seasonally affected.
Getting your Vitamin D levels checked should be part of every person’s winter health regimen. If you haven’t been tested this year, call the clinic today at (503) 287-4970, or email info@naturecuresclinic.com for an appointment.
Image courtesy: SeanMcGrath
Tags: dr leslie fuller, research, sunshine, vitamin D
Posted in Articles by our Doctors, Dr. Fuller, General | Comments Off
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Tags: alternative cancer prevention, Diet, endometrial cancer, natural cancer prevention, naturopathic cancer prevention, Nutrition, vitamin D
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Thursday, September 16th, 2010
Tags: alternative flu prevention, Diet, flu shot, natural flu prevention, Nutrition, vaccine, vitamin D
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Thursday, September 2nd, 2010
Tags: Cardiovascular disease, Diet, Heart disease, heart failure, natural heart disease prevention, Nutrition, Supplements, vitamin D
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Vitamin D really does prevent cancer, autoimmune diseases
Monday, August 30th, 2010
Tags: autoimmune diseases, Chron's disease, Chronic disease, Diabetes, Diet, leukemia, multiple sclerosis, natural cancer prevention, Nutrition, rheumatoid arthritis, sunshine, vitamin D
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Vitamin D may treat and prevent allergic reaction to mold in cystic fibrosis patients
Thursday, August 26th, 2010
Tags: cystic fibrosis, mold allergy, vitamin D
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Vitamin D Found to Influence Over 200 Genes, Highlighting Links to Disease
Tuesday, August 24th, 2010
Tags: Alzheimer's, Cancer, Cardiovascular disease, Chronic disease, dementia, Diabetes, Diet, Heart disease, Nutrition, Parkinson's, RA, rheumatoid arthritis, vitamin D
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Vitamin D Linked To Autoimmune And Cancer Disease Genes, Underscoring Risks Of Deficiency
Tuesday, August 24th, 2010
Tags: alternative cancer prevention, autoimmune diseases, Cancer, Diabetes, multiple sclerosis, natural cancer prevention, sun, Supplements, VDR, vitamin D, vitamin D deficiency, vitamin D receptor
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Even a low-dose vitamin D pill cuts breast cancer risk by 24 percent
Sunday, August 15th, 2010
Tags: alternative breast cancer prevention, Breast cancer, natural breast cancer prevention, naturopathic breast cancer prevention, supplementation, vitamin D
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Higher 25-hydroxyvitamin D is associated with lower relapse risk in multiple sclerosis.
Wednesday, August 11th, 2010
Study shows that there is an inverse relationship between 25-OH-D levels and risk of relapse in MS patients.
Tags: 25-OH-D, alternative MS treatment, MS, MS relapse, multiple sclerosis, natural MS treatment, vitamin D
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Vitamin D improves overall immune function
Monday, August 9th, 2010
Tags: Diet, immune system, natural immune system booster, Nutrition, sunshine, vitamin D
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Vitamin D best taken with largest meal of day, study finds
Tuesday, July 27th, 2010
Tags: eating, meal, Supplements, vitamin D
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Lack of sunlight exposure causes mothers to give birth to babies with multiple sclerosis
Friday, July 16th, 2010
Tags: baby, MS, multiple sclerosis, newborn, pregnancy, sun, vitamin D
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Large-Scale, Long-Term Studies Support Roles Of Physical Activity And Diet In Dementia And Cognitive Decline
Tuesday, July 13th, 2010
Tags: aging, alternative dementia treatment, Alzheimer's disease, Cardiovascular disease, dementia, Diet, Elderly, Exercise, Healthy lifestyle, natural dementia prevention, natural dementia treatment, naturopathic dementia prevention, naturopathic dementia treatment, Nutrition, Stroke, Supplements, tea, vitamin D
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