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

SURVEY: Cognitive Impairment II

Top 3 Nutrients to Detox the Liver and Soothe Digestion

Natural Bladder Control, Go Less and Live More

Top Vitamin and Mineral Deficiencies — Are You at Risk?

Vital Molecule Increases Cellular Energy and Improves Cognitive Function

Omega Fix for Obesity: How the Right Fats Fight Fat

Potential of Quercetin in the Treatment of Melanoma

How Pomegranate May Protect Against Cancer

Trimming the spare tire: Canola oil may cut belly fat

Supplementation with vitamins C and E associated with decreased risk of cognitive impairment, dement...

 
Print Page
Email Article

Supplements of 20 micrograms/day cholecalciferol [vitamin D3] optimized serum 25-Hydroxyvitamin D concentrations in 80% of premenopausal women in winter - Source: Journal of Nutrition, March 2009

  [ 6 votes ]   [ Discuss This Article ]
By Monica L Nelson, Susan S Sullivan, et al. • www.ProHealth.com • March 9, 2009


[Note: ug stands for microgram, or one thousanth of a miligram. Most supplements express dosages in international units (iu) – which is an international standard of an agreed upon biological effect. This varies by the substance measured. For vitamin D3, the conversion to iu is ug times 40; so 22 ug/day – the amount given to these young women starting in September - translates to 880 iu/day. Blood testing for 25(OH)D is considered the best indicator of vitamin D status.]

The serum 25-hydroxyvitamin D [25(OH)D] response to daily supplementation with 20 ug cholecalciferol (D3) during winter in predominantly white premenopausal women living in Maine was measured and the effects of body composition and hormonal contraceptive use on baseline serum 25(OH)D concentrations and the response to supplementation were examined.

A total of 112 women (22.2 ± 3.7 years old) received placebo from March 2005 until September 2005 when they were randomized to receive either placebo or 20 ug/d D3 through February 2006. Eighty-six women completed the study.

Actual mean D3 content of the supplements was 22 ug per capsule. In February 2005 the serum 25(OH)D concentration was 62.0 ± 23.4 nmol/L (mean ± SD).

Serum 25(OH)D concentrations increased by 35.3 ± 23.2 nmol/L from February 2005 to February 2006 in the treatment group, significantly more than the 10.9 ± 16.9 nmol/L increase in the placebo group. Treatment group, magnitude of summer increase in 25(OH)D, estrogen dose, and baseline serum 25(OH)D concentrations, but not body fat, were significant predictors of the 1-year change in 25(OH)D concentrations used to assess the magnitude of the response to supplementation.

Daily supplementation with 20 ug D3 during winter achieved optimal 25(OH)D concentrations (75 nmol/L or more) in 80% of participants, indicating that this dose is adequate to optimize vitamin D status in most young women in Maine.

Source: Journal of Nutrition, March 2009;139(3). Nelson ML, Blum JM, Hollis BW, Rosen C, Sullivan SS. University of Maine, Department of Food Science and Human Nutrition, Orono, Maine; Dietary Supplement Research Group, Saco, Maine; Medical University of South Carolina, Department of Pediatrics, Charleston, South Carolina; Maine Medical Center Research Institute, Scarborough, Maine, USA. [E-mail: susans@maine.edu]





Post a Comment

Featured Products From the ProHealth Store
Ultra ATP+, Double Strength Optimized Curcumin Longvida® FibroSleep™


Article Comments



Be the first to comment on this article!

Post a Comment


 
Natural Pain Relief Supplements

Featured Products

Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength
FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
Optimized Curcumin Longvida® Optimized Curcumin Longvida®
Supports Cognition, Memory & Overall Health
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils

Natural Remedies

Block Acid Reflux to Prevent Esophageal Problems! Block Acid Reflux to Prevent Esophageal Problems!
IBS, Crohn’s Disease, Colitis, and Other Digestive Disorders IBS, Crohn’s Disease, Colitis, and Other Digestive Disorders
The Guaifenesin Story: A centuries-old bark extract used for clearing the airways – now key to a popular FM symptom-reversal protocol The Guaifenesin Story: A centuries-old bark extract used for clearing the airways – now key to a popular FM symptom-reversal protocol
Secret Nutrient for Radiant Skin Secret Nutrient for Radiant Skin
Studies Show that Magnesium L-threonate Improves Brain Plasticity, Leading to Direct and Significant Improvements in Memory, Learning, and Cognition.3 Studies Show that Magnesium L-threonate Improves Brain Plasticity, Leading to Direct and Significant Improvements in Memory, Learning, and Cognition.3

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

© 2016 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map