Front Page
 

2015 MAPD and PDP open enrollment
How you can help fight Medicare fraud
How doctors fight Medicare fraud
How we fight Medicare fraud
When BCBSTX calls
BCBSTX grants support healthy kids, families
Cheap drugs aren't always a good deal
 

Get your flu shot, pneumonia too
What to do with outdated drugs
Tips for taking drugs safely
Treat cholesterol to treat diabetes
Link between stress, depression and heart health
 
How to have a healthier holiday
Why you should gather important documents
Download an important documents checklist
When friends move away
Surviving empty nest syndrome
Keep everyone updated with Caring Bridge
What to see, eat and buy in Santa Fe
Understanding Native Americans
Dramatic depiction of slavery
Women and war
 
Restaurant safety
Food safety at home
How to safely cut a melon
 
 
Play our 'Mystery Game'
Crossword puzzle
Sudoku puzzle
Word search puzzle
 
 
Medicare Basics
Recent News
Current Issue
Previous Issues
About LifeTimes Newsletter
Sign up to get LifeTimes by email
 


  facebook twitter youtube
  Learn more


 
Share |
Health Briefs

Can vitamin D help prevent colds? New study casts doubt

Like vitamin C, large doses of vitamin D are touted by some as helping prevent or reduce the severity of colds, though research studies remain inconclusive. Now, another study involving 25-hydroxyvitamin D, or 25-OHD, the form of vitamin D available as a nutritional supplement, suggests large doses of the supplement are of no value in preventing upper respiratory infections.

The October 3, 2012 Journal of the American Medical Association (JAMA) reports 322 healthy adults took part in a randomized control trial at the University of Otago in Christchurch, New Zealand. It was funded by the Health Research Council of New Zealand.

David R. Murdoch, M.D., and colleagues conducted a randomized trial to examine the effect of vitamin D supplementation on the incidence and severity of upper respiratory tract infections (URTIs) in healthy adults. The study took place between February 2010 and November 2011. One group received an initial dose of 200,000 IU of oral 25-hydroxyvitamin D, then the same dose a month later, followed by 100,000 IU monthly for a total of 18 months. Others received a placebo.

The study results shows "no statistically significant differences in the number of colds and URTIs per participant (3.7 per person in the vitamin D group and 3.8 per person in the placebo group on average), duration of symptoms per episode, severity of episodes or number of work days missed." Researchers added that further research is needed "to clarify whether there is benefit from supplementation in other populations and with other dosing regimens."

If you consider taking nutritional supplements, always check first with your doctor.