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

Basic Aromatherapy to Help Balance and Calm

Tea drinkers have lower glaucoma risk

Wonderful White Tea: A Drink Fit for an Emperor

The Long-Term Benefits of Drinking Oolong Tea

Why You Should Try This Sweet-Smelling and Health-Boosting Essential Oil

Chamomile Tea: Why This Ancient Therapeutic Drink Still Stands Out Today

Arnica: This Powerful Herb Promotes Various Kinds of Healing

Get ‘Hooked’ on Cat’s Claw: The Many Benefits of This Amazonian Herb

Acid Reflux May Respond Better to Foods Than Prescribed Pills

Try Apple Cider Vinegar and Black Cumin Oil as Your Go-To Salad Dressing

 
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
Vitamin D3 Extreme™ Ultra EPA  - Fish Oil Optimized Curcumin Longvida®


Article Comments



Be the first to comment on this article!

Post a Comment


 
Optimized Curcumin Longvida with Omega-3

Featured Products

FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%
Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function

Natural Remedies

Priming Your Immune System for Cold & Flu Season Priming Your Immune System for Cold & Flu Season
The Most Powerful Natural Antioxidant Discovered to Date - Hydroxytyrosol The Most Powerful Natural Antioxidant Discovered to Date - Hydroxytyrosol
How I Found My Long-Lost Energy How I Found My Long-Lost Energy
Herbal Rescue for High Blood Sugar Herbal Rescue for High Blood Sugar
Magnesium + Malic Acid: One-Two Punch for Pain & Fatigue Magnesium + Malic Acid: One-Two Punch for Pain & Fatigue

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

© 2018 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map