ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

Curcumin: The All In One Solution, Part 2

CoQ10 — A Nutritional Powerhouse for Mitochondrial Health

What Are the Benefits of Vitamin K2?

Vitamin D deficiency + high fat diet = metabolic syndrome

Use Burdock Oil to Promote Healthy Hair Growth

Why You Should Take Your Apple Cider Vinegar at Night

AMA journal associates iron deficiency with hearing loss

Lutein linked to preservation of crystallized intelligence

People with forms of early-onset Parkinson's disease may benefit from boosting niacin in diet, resea...

Zinc eaten at levels found in biofortified crops reduces 'wear and tear' on DNA

 
Print Page
Email Article

Serum 25-hydroxyvitamin D status of the US population: 1988–1994 compared with 2000-2004 - Source: American Journal of Clinical Nutrition, Dec 1, 2008

  [ 6 votes ]   [ Discuss This Article ]
By Anne C Looker, et al. • www.ProHealth.com • December 8, 2008


[For a commentary on this report, recommending it “be required reading for all nutritionists, clinicians, and vitamin D aficionados who are decision makers with regard to 25(OH)D assays, vitamin D nutritional policy, and the care of patients with vitamin D-related diseases,” see the corresponding editorial “A vitamin D nutritional cornucopia: New insights concerning the serum 25-hydroxyvitam D status of the US population,” by vitamin D expert Anthony W. Norman at University of California-Riverside.]

Background: Changes in serum 25-hydroxyvitamin D [25(OH)D] concentrations in the US population have not been described.

Objective: We used data from the National Health and Nutrition Examination Surveys (NHANES) to compare serum 25(OH)D concentrations in the US population in 2000–2004 with those in 1988–1994 and to identify contributing factors.

Design: Serum 25(OH)D was measured with a radioimmunoassay kit in 20,289 participants in NHANES 2000-2004 and in 18,158 participants in NHANES III (1988–1994). Body mass index (BMI) was calculated from measured height and weight. Milk intake and sun protection were assessed by questionnaire. Assay differences were assessed by re-analyzing 150 stored serum specimens from NHANES III with the current assay.

Results: Age-adjusted mean serum 25(OH)D concentrations were 5–20 nmol/L lower in NHANES 2000–2004 than in NHANES III. After adjustment for assay shifts, age-adjusted means in NHANES 2000–2004 remained significantly lower (by 5–9 nmol/L) in most males, but not in most females. In a study subsample, adjustment for the confounding effects of assay differences changed mean serum 25(OH)D concentrations by [about] 10 nmol/L, and adjustment for changes in the factors likely related to real changes in vitamin D status (i.e., BMI [body mass index], milk intake, and sun protection) changed mean serum 25(OH)D concentrations by 1–1.6 nmol/L.

Conclusions: Overall, mean serum 25(OH)D was lower in 2000–2004 than 1988–1994. Assay changes unrelated to changes in vitamin D status accounted for much of the difference in most population groups. In an adult subgroup, combined changes in BMI, milk intake, and sun protection appeared to contribute to a real decline in vitamin D status.

[Authors' Note:] The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the Centers for Disease Control and Prevention, the National Institutes of Health, or the US Department of Health and Human Services. Reprints are not available. Address correspondence to AC Looker - e-mail acl1@cdc.gov.

Source: American Journal of Clinical Nutrition, Dec 1, 2008;88(6) 1519-1527. doi:10.3945/ajcn.2008.26594, by Looker AC, Pfeiffer CM, Lacher DA, Schleicher RL, Picciano MF, Yetley EA. National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, Maryland; National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia; Office of Dietary Supplements, National Institutes of Health, Bethesda, Maryland, USA. [E-mail: AC Looker acl1@cdc.gov]





Post a Comment

Featured Products From the ProHealth Store
Vitamin D3 Extreme™ Energy NADH™ 12.5mg Ultra EPA  - Fish Oil

Looking for Vitamins, Herbs and Supplements?
Search the ProHealth Store for Hundreds of Natural Health Products


Article Comments



Be the first to comment on this article!

Post a Comment


 
NAD+ Ignite with Niagen

Featured Products

Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils
Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength
Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%

Natural Remedies

Milk Thistle: Trusted Support for Health & Healing in a Toxic World Milk Thistle: Trusted Support for Health & Healing in a Toxic World
Block Acid Reflux to Prevent Esophageal Problems! Block Acid Reflux to Prevent Esophageal Problems!
Complete and Natural Menopause Relief Complete and Natural Menopause Relief
Coping When Colds or Flu Catch Up with You Coping When Colds or Flu Catch Up with You
Vitamin K-2 – A Key Player in Cardiovascular and Bone Health Vitamin K-2 – A Key Player in Cardiovascular and Bone Health

CONTACT US
ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
SHOP WITH CONFIDENCE
Credit Card Processing
SUBSCRIBE TO OUR NEWSLETTERS
Get the latest news about Fibromyalgia, M.E/Chronic Fatigue Syndrome, Lyme Disease and Natural Wellness

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2017 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map