Navigation Links
Vitamin D supplements may protect against viral infections during the winter
Date:4/30/2012

Vitamin D may be known as the sunshine vitamin, but a new research report appearing in the Journal of Leukocyte Biology shows that it is more than that. According to the report, insufficient levels of vitamin D are related to a deficiency in our innate immune defenses that protect us from infections, neoplasias or autoimmune diseases. Since vitamin D levels decrease during autumn and winter when days are shorter and sunlight is relatively weak, this may explain why people are more prone to viral infection during these times. It also suggests that vitamin D supplementation, especially in older populations, could strengthen people's innate immunity against viral infections.

"There are numerous studies showing the benefits of maintaining adequate Vitamin D levels. As more and more research into Vitamin D is conducted, we are learning that it is extremely important for human health. Our study is no different, and vitamin D supplements should be considered one of many tools that might help when conventional therapies are not enough," said Victor Manuel Martinez-Taboada, M.D., a researcher involved in the work from the Division of Rheumatology at the Hospital Universitario "Marque's de Valdecilla," Facultad de Medicina at the Unversidad de Cantabria, in Santander, Spain.

To make this discovery, the researchers compared the changes in the blood levels of vitamin D among three groups of healthy subjects: young (age range: 20-30), middle (age range: 31-59), and elderly (age range: 60-86). They found decreased levels of vitamin D with aging, prompting researchers to compare whether such changes kept any relationship with toll-like receptor (TLR) expression measured on lymphocytes and monocytes and function after in vitro stimulation with specific ligands for each of the nine human TLRs and measurement of effector molecules, such as proinflammatory cytokines. Specifically, they found that the TRL most affected by a vitamin D insufficiency is TLR7, which regulates the immune response against viruses. Finally, scientists studied whether there was any difference in the three age groups depending on the season of the year since it is well known that a limited sun exposure during darker winter months is related with vitamin D deficiency.

"Any school teacher will tell you that people tend to be sicker during the winter than any other time of the year," said John Wherry, Ph.D., Deputy Editor of the Journal of Leukocyte Biology. "There have been numerous studies showing several environmental factors during winter months may allow viruses to spread easier. This study shows that sunlight, or more precisely the lack of vitamin D, could have a role in the seasonally higher rates of infection. More extensive studies must be conducted for this link to be conclusive, but since vitamin D supplements are inexpensive and generally safe, this is a really exciting discovery."


'/>"/>

Contact: Cody Mooneyhan
cmooneyhan@faseb.org
301-634-7104
Federation of American Societies for Experimental Biology
Source:Eurekalert

Related biology news :

1. Clinical trial launches to see whether vitamin D helps treat multiple sclerosis
2. Researchers discover how vitamin D inhibits inflammation
3. Vitamin B and omega-3 supplementation and cancer: New data
4. Researchers warn nanoparticles in food, vitamins could harm human health
5. Stealthy leprosy pathogen evades critical vitamin D-dependent immune response
6. New standard for vitamin D testing to ensure accurate test results
7. Elseviers Maturitas publishes position statement on the role of vitamin D in postmenopausal women
8. Scientists identify an innate function of vitamin E
9. Loyola receives NIH grant to study vitamin D deficiency in African populations
10. New study links excessive amounts of vitamin D to onset of atrial fibrillation
11. Low vitamin C levels may raise heart failure patients risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/2/2016)... 2016 Technology Enhancements Accelerate Growth of X-ray Imaging ... digital and computed radiography markets in Thailand ... Indonesia (TIM). It provides an in-depth ... well as regional market drivers and restraints. The study ... and market attractiveness, both for digital and computed radiography. ...
(Date:2/1/2016)... , February 1, 2016 Rising ... to drive global touchfree intuitive gesture control market ... Rising sales of consumer electronics coupled with new ... market size through 2020   ... coupled with new technological advancements to drive global touchfree ...
(Date:1/28/2016)... SYNA ), a leading developer of human interface solutions, today ... --> --> Net revenue ... to the comparable quarter last year to $470.5 million. Net income ... $0.93 per diluted share. --> ... 2016 grew 9 percent over the prior year period to $60.3 ...
Breaking Biology News(10 mins):
(Date:2/4/2016)... 4, 2016  Spherix Incorporated (Nasdaq: SPEX ) -- an ... monetization of intellectual property, today provided an update on ... Northern District of Texas and ... Inter Partes Re-examination ("IPR") proceedings that VTech ... IPR was initiated on only certain claims of two ...
(Date:2/4/2016)... 4, 2016 Strasbourg, France ... --> Strasbourg, France , to the ... PharmaVentures is pleased to announce that it acted as an ... unit in Strasbourg, France , to the ... --> --> Transgene (Euronext: TNG), a member ...
(Date:2/3/2016)... Pa. , Feb. 3, 2016  Discovery ... company focused on developing aerosolized KL4 surfactant therapies ... of Directors has approved an inducement award as ... Fraser , its newly appointed President and Chief ... Board,s Compensation Committee on February 1, 2016 and ...
(Date:2/3/2016)... and HOLLISTON, Mass., Feb. 3, 2016 Harvard ... a biotechnology company developing bioengineered organ implants for ... today announced that CEO Jim McGorry , ... Investor Conference on Tuesday, February 9, 2016 ... York City . HART,s presentation will be ...
Breaking Biology Technology: