Featured Stories

Mediterranean Diet Protects Everybody

Good Humor Is Good Medicine for Seniors

The Bright Side of Dark Chocolate

Barley Fiber Improves Blood Sugar Control

Olive Oil’s Potentially Positive Heart Health Effects

How to Avoid Arsenic and Still Enjoy Juice

Plant Extracts May Help Keep Hunger at Bay

Life-Long Eating Habits Affect Colon Health

Healthy Bugs May Help Fight Off Colds

Smarter Snacking Leads to Healthier Diet

Too Heavy? Try Getting Your Grape On

The Not-So-Surprising Key to Stopping Middle-Age Spread

Soy May Help Control Cholesterol

Think Fiber First for Healthier Teens

Wild Blueberry May Support Intestinal Balance

Natural Products Foundation
1773 T St. NW
Washington, DC 20009
(202) 223-0101 ext. 115
(202) 223-0250 - Fax


Board of Directors
Chairman: Derek Hall

Treasurer: David Matteson
pH Sciences Holdings

Secretary: J.D. Weir
Primus Pharmaceuticals

Lise Alschuler
Emerson Ecologics

Carilyn Anderson
Carlson Laboratories

Jane Drinkwalter
Vitamer Labs

David Brown

Peter Hafermann
Alix Technologies

Skye Lininger

Jim Prochnow
Greenberg Traurig, LLP

Pat Sardell
Country Vitamins

Jeff Wright
Wright's Nutrients

Legal Advisory Council
Chairman: Marc Ullman
Ullman, Shapiro, Ullman

Jackie Kuler
Gronek & Associates

Nicholas Licato
Nexgen Pharma

NPF Staff
Executive Director:
Deb Knowles

Tapping into Vitamin D Benefits

Getting plenty of vitamin D from the diet and supplements, from sun exposure, or from a combination of these things is increasingly being recognized as key to good health. Unfortunately, many folks do not get enough of this nutrient. If vitamin D has been on your mind, you’ll welcome the news that one particular form of the nutrient is especially effective for addressing deficiency and improving health.

Studying form and function

Researchers invited 20 healthy, post-menopausal women to participate in a four-month study to examine how two forms of vitamin D affect blood levels of the nutrient and other markers of health. The average vitamin D blood level of the study group was 13.2 ng/ml (nanograms per milliliter), which means that despite appearing to be in good health, some of the women were vitamin D deficient, and many had D levels too low (insufficient) for good health.

The women were randomly selected to take 800 International Units (IU) of one of the following:

  • Vitamin D3, a form of the nutrient commonly found in dietary supplements
  • 25-Hydroxy vitamin D3, the form of the nutrient that circulates in the body

The women completed tests of lower body function at the start and end of the study, and 14 times throughout the study, the researchers measured:

  • Blood levels of vitamin D
  • Blood pressure
  • Blood levels of seven substances linked with immune function

Compared with the women taking vitamin D3, those taking 25-hydroxy vitamin D3:

  • Had a significantly higher average vitamin D blood level of 69.5 ng/ml (the average level in the other group was 31.0 ng/ml)
  • Had significantly faster increases in vitamin D blood levels
  • Were 2.8 times more likely to maintain or improve lower body function
  • Experienced a larger decrease in blood pressure
  • Had significantly greater improvements in four of seven blood markers of immune function

None of the women experienced signs of vitamin D toxicity.

Dialing in on D

There is no doubt that vitamin D is important for health, and this study suggests that the 25-hydroxy vitamin D3 form may more quickly and efficiently address low levels and the health problems associated with not getting enough D. Tips to help you dial in on vitamin D for good health include:

  • Get checked. Health experts concur that everyone can safely take up to 1,200 IU of vitamin D daily. If you want to take higher doses, get your blood levels checked first, to make sure you need the extra D.
  • Ask the doc. If your vitamin D levels are low ask your doctor about taking higher doses of regular vitamin D supplements to get your levels up. The newer form of the supplement, called 25-hydroxy vitamin D3 isn’t yet available, but look for it in the future.
  • Find food. Make vitamin D-rich foods, such as fatty fish and fortified dairy products part of your diet.
  • Get specific. Low levels of vitamin D are associated with increased risk of heart disease, osteoporosis (weak, brittle bones), high blood pressure, some types of cancer, autoimmune conditions, type 2 diabetes, and even infections such as colds and flu (influenza). If any of these conditions affect you or run in your family, pay especially close attention to your D levels; ask a dietitian how much to supplement if your levels are low.

(J Bone Miner Res 2011; doi 10.1002/jbmr.551)

Suzanne Dixon, MPH, MS, RD, an author, speaker, and internationally recognized expert in chronic disease prevention, epidemiology, and nutrition, has taught medical, nursing, public health, and alternative medicine coursework. She has delivered over 150 invited lectures to health professionals and consumers and is the creator of a nutrition website acclaimed by theNew York Times and Time magazine. Suzanne received her training in epidemiology and nutrition at the University of Michigan, School of Public Health at Ann Arbor.

Copyright © 2011 Aisle7. All rights reserved.

Learn more about Aisle7, the company.

Learn more about the authors of Aisle7 products.

Live Your Healthiest Life!
Click here for information on a variety
of health topics.

Find Answers
Vitamins A to Z
Click here for information on vitamins,
minerals, supplements and herbs

Find Answers
About | For Industry | Lookup | In the News | Newsletter | Donate
Natural Products Foundation
Copyright 2015 Natural Products Foundation | Privacy Policy | Disclaimer