Thursday, March 31, 2011

The link between vitamin D and lung function

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31 March 2011

UK Edition

Dear Reader,

Well, it's time to add one more item to the "You're still not taking Vitamin D supplements?!" list.

A mouse study out of Australia has provided the first concrete evidence of a link between vitamin D deficiency and decreased lung function. In fact, this study shows that vitamin D deficiency actually alters the very structure of the lungs, resulting in lower lung volume.

Yes, this was a mouse study — but it follows right along with previous human studies showing a link between vitamin D deficiency and the severity of asthma and chronic obstructive pulmonary disease (COPD).

This time, however, researchers were able to show a direct causal link between vitamin D deficiency and lung function. The results raised concerns about the increased prevalence of vitamin D deficiency. For me, it raises major concerns about the misguided, way too low, vitamin D recommendations from the Institute of Medicine.

Now, I've written quite a lot about vitamin D over the past year or so, the reason being is that vitamin D is absolutely vital to your health.

I'm not the only one obsessed with vitamin D news. A new assay hitting Europe is able to determine early vitamin D deficiency by measuring blood levels of 25-hydroxy (25-OH) vitamin D. What's so special about that? Vitamin D testing is known for being pretty inaccurate. Testing 25-OH vitamin D is the most accurate type of vitamin D test.

Tech company Abbott, which developed the assay, says this means more opportunities for preventative and therapeutic action. Having the test done can be requested through your doctor, in the UK and elsewhere in Europe.

Unfortunately, this test hasn't yet hit the US. But you can bet I'll be keeping an eye out for it and will let you know about any developments.

In the meantime, Dr. Wright has previously stated that sunlight is the very best source of vitamin D (the rays start a chain of reaction within the human body that results in the production of vitamin D). Of course, he realizes nobody gets enough sun these days, so supplementation is key.

He recommends 4,000 International Units daily for adults and teens, 1,000 IU for infants and small children, and 2,000 IU for everyone in between. Of course, it's always best to consult with a doctor skilled in natural medicine in determining proper supplement dosage.

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Is a low-carb diet a bad mood diet?

Q: After reading your report on diabetes, I got tested for insulin resistance. My results were positive and I tried following a low-carb diet, as you suggested. However, I found that my mood was terrible the whole time I was on it. It got so bad I stopped eating that way. I'd really like to go back to it, though, since it helped my blood sugar so much (not to mention that it helped me lose 15 pounds). Is this normal? And is there anything I can do to prevent it?

Dr. Jonathan V. Wright: Every once in a while, I come across a patient who clearly has the criteria for success with a low-carbohydrate diet, but who has developed depression — anything from mild to serious — while following it. Like you, some of these people are ready to quit the high-protein diet just to escape the depression, even though they feel much better physically. But I usually ask them to try another approach first — replacing something their body may not be getting enough of.

I'm sure you've heard the phrase "fat and happy." Well, it's not just folklore. The same carbs that make you fat (and contribute to diabetes and other problems) also make you happy. It's simple science: Carbs allow more of the amino acid L-tryptophan to penetrate your brain. The L-tryptophan triggers your brain to make more serotonin, and the serotonin makes you feel happier. But if you're following a low-carb diet, it's possible that not enough L-tryptophan will penetrate your brain, and you could wind up feeling depressed.

The solution can be as simple as taking supplemental tryptophan so there's more of it to penetrate the brain. I typically recommend either 1,500 milligrams twice daily or, if that causes drowsiness (which is rare but possible), all 3,000 milligrams can be taken at bedtime. Just make sure not to take it when you're eating protein. It's best to take tryptophan with whatever small amount of carbohydrates you do eat.

L-tryptophan has been available by prescription for two to three years now, in the US, but it also very recently became available over-the-counter once again. At present, over-the-counter L-tryptophan can be found in natural health food stores and online sources, in the UK. But if you have trouble finding the over-the-counter version, a doctor skilled in natural medicine should be able to help you.
Bear in mind we are not addressing anyone's personal situation and you should rely on this for informational purposes only. Please consult with your own doctor before acting on any recommendations contained herein.

Wishing you the best of health,

Andrew Miller
UK Editor
Nutrition and Healing


P.S. In the latest issue of Nutrition & Healing, Dr Jonathan V. Wright will tell you about the simple eclampsia elimination programme – and the cover-up that's killing tens of thousands each year. Also, learn how much Resveratrol you should take to get the maximum benefits from this super-antioxidant... plus much, much more...

All new members who sign up will receive important updates like these in addition to receiving Dr. Wright's 7 Volume Library of Natural Healing.

Click here for full details.

Sources:

"New test may help detect vitamin D deficiency earlier," Nutraingredients USA (nutraingredients-usa.com)

"Vitamin D Deficiency Alters Lung Growth and Decreases Lung Function," Science Daily (sciencedaily.com)

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