Featured Research

from universities, journals, and other organizations

Nearly 80 million Americans won't need vitamin D supplements under new guidelines

Date:
October 24, 2012
Source:
Loyola University Health System
Summary:
Nearly 80 million Americans would no longer need to take vitamin D supplements under new Institute of Medicine guidelines, according to a new study.

Nearly 80 million Americans would no longer need to take vitamin D supplements under new Institute of Medicine guidelines, according to a study by Loyola University Chicago Stritch School of Medicine researchers.

Related Articles


Results were published Oct. 24, 2012 in the journal PLOS ONE.

The new guidelines advise that almost all people get sufficient vitamin D when their blood levels are at or above 20 nanograms per milliliter (ng/ml). Older guidelines said people needed vitamin D levels above 30 ng/ml.

Holly Kramer, MD, MPH and colleagues examined data from 15,099 non-institutionalized adults who participated in the Third National Health and Nutrition Examination Study (NHANES III). The sample included 1,097 adults who had chronic kidney disease, which has been linked to low vitamin D levels.

In the survey population, 70.5 percent of adults with healthy kidneys had vitamin D blood levels that would be considered insufficient under the older guidelines. But under the newer Institute of Medicine guidelines, only 30.3 percent of these adults had insufficient vitamin D levels.

Among adults with chronic kidney disease, 76.5 percent had insufficient vitamin D under the older guidelines, while only 35.4 percent had insufficient levels under the Institute of Medicine guidelines.

Because NHANES III is a representative sample, researchers were able to extrapolate results to the general population. Kramer and colleagues estimate that a total of 78.7 million adults considered to have insufficient vitamin D levels under the older guidelines would now have sufficient levels under the Institute of Medicine guidelines. "The new guidelines have an impact on a large proportion of the population," Kramer said.

The Institute of Medicine guidelines are based on nearly 1,000 published studies and testimony from scientists and other experts. (The Institute of Medicine committee that wrote the new guidelines for vitamin D and calcium includes Ramon Durazo-Arvizu, PhD, a professor in Loyola's Department of Preventive Medicine and Epidemiology).

The Institute of Medicine committee found that vitamin D is essential to avoid poor bone health, such as rickets. But there have been conflicting and mixed results in studies on whether vitamin D can also protect against cancer, heart disease, autoimmune diseases and diabetes, the Institute of Medicine committee found. Moreover, excessive vitamin D can damage the kidneys and heart, the committee reported.

However, the Institute of Medicine guidelines are controversial. For example, the Endocrine Society continues to endorse the older guidelines. Kramer said that people who are confused about how much vitamin D they need should consult with their doctors.

Kramer is first author of the study, which was funded by the National Institutes of Health. She is an associate professor in Loyola's Department of Preventive Medicine and Epidemiology and Department of Medicine, Division of Nephrology and Hypertension. Her co-authors are Durazo-Arvizu; Guichan Cao, MS; Amy Luke, PhD; David Shoham, PhD; and Richard Cooper, PhD of Loyola's Department of Preventive Medicine and Epidemiology and Chris Sempos, PhD of the National Institutes of Health's Office of Dietary Supplements.


Story Source:

The above story is based on materials provided by Loyola University Health System. Note: Materials may be edited for content and length.


Cite This Page:

Loyola University Health System. "Nearly 80 million Americans won't need vitamin D supplements under new guidelines." ScienceDaily. ScienceDaily, 24 October 2012. <www.sciencedaily.com/releases/2012/10/121024175229.htm>.
Loyola University Health System. (2012, October 24). Nearly 80 million Americans won't need vitamin D supplements under new guidelines. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2012/10/121024175229.htm
Loyola University Health System. "Nearly 80 million Americans won't need vitamin D supplements under new guidelines." ScienceDaily. www.sciencedaily.com/releases/2012/10/121024175229.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Leaves Orphans Alone in Sierra Leone

Ebola Leaves Orphans Alone in Sierra Leone

AFP (Nov. 27, 2014) — The Ebola epidemic sweeping Sierra Leone is having a profound effect on the country's children, many of whom have been left without any family members to support them. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
Experimental Ebola Vaccine Shows Promise In Human Trial

Experimental Ebola Vaccine Shows Promise In Human Trial

Newsy (Nov. 27, 2014) — A recent test of a prototype Ebola vaccine generated an immune response to the disease in subjects. Video provided by Newsy
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) — Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) — Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins