Featured Research

from universities, journals, and other organizations

Vitamin A deficiency does not affect onset of asthma, study suggests

Date:
June 22, 2011
Source:
European Lung Foundation
Summary:
Vitamin A deficiency does not increase the risk of asthma, according to new research.

Vitamin A deficiency does not increase the risk of asthma, according to new research published online in the European Respiratory Journal. In developing countries, vitamin A deficiency is particularly common and previous research has shown that it harms the development of the lungs.

This study aimed to assess whether vitamin A deficiency influences the development of asthma later in life.

The research, which was carried out by scientists at Johns Hopkins University in the USA and Nepalese scientists, analysed over 5,000 people living in a rural area of Nepal, where many people suffer from chronic malnutrition. They assessed whether taking vitamin A supplements at an early age altered the risk of developing of asthma.

The participants were children who had participated in two different studies. In the first, half the children were given vitamin A supplements during their pre-school years and half received a placebo. In the second study, one-third of the mothers of the children each received vitamin A supplements before, during and after pregnancy, and one-third received no supplements.

Ten to fifteen years after the studies were completed, the researchers used questionnaires and a spirometry test, which measures the amount of air in your lungs and how quickly you can breathe out, to assess lung function and whether or not the children had asthma.

The results showed that there was no difference between the children receiving supplements and those that did not receive them, in both groups of participants. The results from the spirometry tests also showed that vitamin A deficiency did not impact upon the risk of wheezing, cough, phlegm and obstructive airways.

Dr William Checkley, lead author from the John Hopkins University, said: "Contrary to what has previously been thought, our findings show that vitamin A deficiency does not lead to an increased risk of asthma. If vitamin A status was linked to asthma, the supplement taken by the study participants, would have led to some reduction in the risk of developing the condition, which we did not see.

"Whilst vitamin A deficiency does affect lung development adversely, we have found no evidence that it is linked with the development of asthma."


Story Source:

The above story is based on materials provided by European Lung Foundation. Note: Materials may be edited for content and length.


Cite This Page:

European Lung Foundation. "Vitamin A deficiency does not affect onset of asthma, study suggests." ScienceDaily. ScienceDaily, 22 June 2011. <www.sciencedaily.com/releases/2011/06/110622224502.htm>.
European Lung Foundation. (2011, June 22). Vitamin A deficiency does not affect onset of asthma, study suggests. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2011/06/110622224502.htm
European Lung Foundation. "Vitamin A deficiency does not affect onset of asthma, study suggests." ScienceDaily. www.sciencedaily.com/releases/2011/06/110622224502.htm (accessed July 23, 2014).

Share This




More Health & Medicine News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Idaho Boy Helps Brother With Disabilities Complete Triathlon

Idaho Boy Helps Brother With Disabilities Complete Triathlon

Newsy (July 23, 2014) An 8-year-old boy helped his younger brother, who has a rare genetic condition that's confined him to a wheelchair, finish a triathlon. Video provided by Newsy
Powered by NewsLook.com
Thousands Who Can't Afford Medical Care Flock to Free US Clinic

Thousands Who Can't Afford Medical Care Flock to Free US Clinic

AFP (July 23, 2014) America may be the world’s richest country, but in terms of healthcare, the World Health Organisation ranks it 37th. Thousands turned out for a free clinic run by "Remote Area Medical" with a visit from the Governor of Virginia. Duration: 2:40 Video provided by AFP
Powered by NewsLook.com
Stone Fruit Listeria Scare Causes Sweeping Recall

Stone Fruit Listeria Scare Causes Sweeping Recall

Newsy (July 22, 2014) The Wawona Packing Company has issued a voluntary recall on the stone fruit it distributes due to a possible Listeria outbreak. Video provided by Newsy
Powered by NewsLook.com
Huge Schizophrenia Study Finds Dozens Of New Genetic Causes

Huge Schizophrenia Study Finds Dozens Of New Genetic Causes

Newsy (July 22, 2014) The 83 new genetic markers could open dozens of new avenues for schizophrenia treatment research. 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:
from the past week

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