Vitamin D doses same for African-American women as whites

 
Post new topic   Reply to topic    msspeaks Forum Index -> GENERAL
View previous topic :: View next topic  
Author Message
agate
Site Admin


Joined: 17 May 2006
Posts: 5694
Location: Oregon

PostPosted: Sat Feb 16, 2013 9:37 pm    Post subject: Vitamin D doses same for African-American women as whites Reply with quote

From Medical News Today, February 14, 2013:

Quote:
Recommended Vitamin D Doses The Same For African-American And Caucasian Women


African-American women battling vitamin D deficiencies need the same dose as Caucasian women to treat the condition, according to a recent study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM)..

Although women with darker skin tones tend to have lower levels of the biomarker used to measure Vitamin D levels, called 25-hydroxyvitamin D or 25OHD, the study found that older African-American and Caucasian women responded in the same way when they received vitamin D supplements.

Unlike many vitamins that are absorbed primarily from foods, the body's main source of vitamin D is sunlight. Vitamin D deficiency, which is primarily caused by inadequate exposure to sunlight and very poor diet, can result in abnormalities in calcium, phosphorus and bone metabolism. Vitamin D deficiency can cause rickets in children or a bone-softening condition called osteomalacia and muscle weakness in adults.

In a double-blind study that gave varying vitamin D doses to African-American and Caucasian women of similar body size, levels of the 25OHD biomarker were very similar. The findings suggest that vitamin D absorption and metabolism is the same in both groups. Researchers concluded that African-American women tend to have lower levels of the biomarker 25OHD because they naturally produce less vitamin D in the skin after sunlight exposure.

"African-American women don't have to worry about taking larger doses of vitamin D to compensate," said J. Chris Gallagher, MD, of Creighton University School of Medicine in Omaha, Neb., and lead author of the study. "They should follow the current medical guidelines for vitamin D supplementation suggested recently by the Institute of Medicine."

The Endocrine Society has issued a separate set of clinical practice guidelines governing vitamin D dosage. The guidelines are available here.*

Previously there was no research in minority populations to determine whether the same guidelines applied to them. Researchers designed this study to develop dosing guidelines for older African-American women. The study, which looked at vitamin D doses in 110 African-American women between the ages of 57 and 90, was the first randomized controlled dose response study conducted in this population.

"We saw a real need to study optimal vitamin D doses in African-American women and help their health care professionals make informed medical decisions," Gallagher said.

Although exposure to sunlight increases vitamin D levels, concerns about melanoma and other types of skin cancer necessitate avoidance of excessive exposure to the sun.
---------------
Other researchers working on the study include: M. Peacock of Indiana University School of Medicine, V. Yalamanchili of Creighton University School of Medicine and L. Smith of the University of Nebraska Medical Center.

The National Institutes of Health's National Institute of Aging and Office of Dietary Supplements funded the research.

The article, "Effects of Vitamin D Supplementation in Older African American Women," appears in the March 2013 issue of JCEM.


The article can be seen here.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    msspeaks Forum Index -> GENERAL All times are GMT - 7 Hours
Page 1 of 1

 
Jump to:  
You can post new topics in this forum
You can reply to topics in this forum
You can edit your posts in this forum
You can delete your posts in this forum
You cannot vote in polls in this forum
Create your own free forum now!
Terms of Service Purchase Ad Removal Forum Archive Report Abuse