Navigation Links
Vitamin D: More may not be better
Date:5/1/2013

In recent years, healthy people have been bombarded by stories in the media and on health websites warning about the dangers of too-low vitamin D levels, and urging high doses of supplements to protect against everything from hypertension to hardening of the arteries to diabetes.

But new research from Johns Hopkins finds that blood levels of the so-called "sunshine vitamin" higher than the top of the range suggested by the Institute of Medicine confer no additional benefit. This finding, combined with results of a previous study by the same group noting potential harm from higher vitamin D levels in healthy people, has urged investigators to prescribe caution.

"Healthy people have been popping these pills, but they should not continue taking vitamin D supplements unchecked," says study leader Muhammad Amer, M.D., M.H.S., an assistant professor in the Division of General Internal Medicine at the Johns Hopkins University School of Medicine. "At a certain point, more vitamin D no longer confers any survival benefit, so taking these expensive supplements is at best a waste of money."

Amer stresses that there are some groups of people elderly, postmenopausal women, and people with kidney disease who do benefit from higher blood levels of a vitamin vital to bone health. Such groups may need to take supplements.

In an article published online in the American Journal of Medicine, Amer and Rehan Qayyum, M.D., M.H.S., also of Johns Hopkins, describe their review of data from more than 10,000 participants in the National Health and Nutrition Examination Survey (NHANES) from 2001 to 2004. They matched those data with mortality data from the National Death Index through Dec. 2006.

When they looked at deaths from all causes and cardiovascular disease specifically, those with blood levels of 21 nanograms per milliliter of 25-Hydroxyvitamin D at the top of the range that the IOM considers "adequate" and at the low end of "
'/>"/>

Contact: Stephanie Desmon
sdesmon1@jhmi.edu
410-955-8665
Johns Hopkins Medicine
Source:Eurekalert

Page: 1 2

Related biology news :

1. The right amount of vitamin D for babies
2. Low vitamin D levels a risk factor for pneumonia
3. Researchers pinpoint upper safe limit of vitamin D blood levels
4. Zebrafish study suggests that vitamin B2 (riboflavin) is an antidote to cyanide poisoning
5. Optimal vitamin D dosage for infants uncertain
6. Vitamin E identified as potential weapon against obesity
7. Quit smoking? Vitamin E may give extra boost to heart health
8. Excess vitamin E intake not a health concern
9. Vitamin P as a potential approach for the treatment of damaged motor neurons
10. Vitamin D benefits breathing in tuberculosis patients
11. Living in a sunny climate does not improve vitamin D levels in hip fracture patients
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/6/2014)... 2014 - Insilico Medicine, Inc, a Baltimore-based bioinformatics ... related diseases announced a research collaboration with the ... Oncology, Inc (OTC: CSBR). , "There are many ... but Champions Oncology,s TumorGraft technology is unique in ... regimen experimentally generating vast amounts of valuable data. ...
(Date:11/5/2014)... de Janeiro, Brazil -Individuals show great diversity in their ... males and females greatly differ in their perceptual evaluation ... of smell tests. , Sex differences in ... behaviors and may be connected to one,s perception of ... emotions. Thus, women,s olfactory superiority has been suggested to ...
(Date:11/4/2014)... Medicine announced today that it is a Grand ... Bill & Melinda Gates Foundation. Laura Goetzl, ... Sciences; and Vice Chair of Research and Academic ... pursue an innovative global health and development research ... Neurodevelopment.", Grand Challenges Explorations (GCE) funds individuals worldwide ...
Breaking Biology News(10 mins):Insilico Medicine, Inc announces research collaboration with Champions Oncology, Inc 2The female nose always knows: Do women have more olfactory neurons? 2Temple University School of Medicine receives Grand Challenges Explorations grant 2
... that can break down plant biomass into the precursors of ... to produce alternatives to petroleum. But the potential of this ... cannot break down lignin, a highly stable polymer that makes ... Streptomyces bacteria are among few microorganisms known to ...
... 14, 2013As scientists continue to unravel the complexity of the ... role in both normal physiology and disease, one particular class ... attention. Guest Editor Tom Cech, PhD and Executive Editor Fintan ... advancing research area in their Editorial " The (Noncoding) ...
... Studies at Le Bonheur Children,s Hospital in Memphis, ... RSV, replicate in humans, mutate to avoid the immune ... DeVincenzo, MD, medical director of Molecular Diagnostics and Virology ... Microbiology, Immunology, and Molecular Biology at The University of ...
Cached Biology News:A microbial biorefinery provides new insight into how bacteria regulate genes 2A microbial biorefinery provides new insight into how bacteria regulate genes 3Noncoding RNAs offer huge therapeutic and diagnostic potential 2Leading RSV researcher publishes work at Le Bonheur Children's 2Leading RSV researcher publishes work at Le Bonheur Children's 3
(Date:11/22/2014)...   , ... zu KLOX    Mariano ... Officer bestellt    KLOX ist bestens ... zugelassenen Behandlungssystems zur Wundheilung zu beginnen    , ... sehr erfreut, die folgenden personellen Veränderungen anzukündigen: ...
(Date:11/21/2014)... , Nov. 21, 2014   TRU-D SmartUVC LLC ... their superbug-killing UVC automated disinfection robot, TRU-D SmartUVC, at FIS ... from Nov. 23 to 26 at Stand 23. ... United Kingdom,s largest infection-related event of ... societies to one of the leading events of its type ...
(Date:11/21/2014)... Offering a complete line of laboratory ... promotion . The Sartorius Entris Balance is the perfect ... and easy-to-maintain balance entry level balance. , The Entris ... to help customer’s bridge the gap between a basic ... very durable. Sartorius is the second biggest balance manufacturer ...
(Date:11/21/2014)... Palo Alto, Calif. (PRWEB) November 20, 2014 ... (CHI), a nonprofit, public policy research organization representing ... and pharmaceutical firms, and PwC US ... other states in life sciences industry growth. The ... and 2013. The 2015 California Biomedical Industry ...
Breaking Biology Technology:KLOX Technologies meldet Neubesetzung von Führungspositionen 2KLOX Technologies meldet Neubesetzung von Führungspositionen 3KLOX Technologies meldet Neubesetzung von Führungspositionen 4KLOX Technologies meldet Neubesetzung von Führungspositionen 5TRU-D SmartUVC to Showcase Superbug-Killing Robot at FIS 2014 2TRU-D SmartUVC to Showcase Superbug-Killing Robot at FIS 2014 3Pipette.com Announces an Extension on the Sartorius Entris Balance Promotion to the End of 2014 2California Healthcare Institute and PwC Report Boom in California’s Biomedical Industry 2California Healthcare Institute and PwC Report Boom in California’s Biomedical Industry 3California Healthcare Institute and PwC Report Boom in California’s Biomedical Industry 4
... 220 V, is used for agitation and mixing ... staining and destaining of gels and blots, and ... (8-40 rpm) and can handle a maximum load ... two 29 x 21 cm platforms covered with ...
...
...
... Wyatt Technology's family of light scattering instruments. ... temperature chromatograph and enables you to get ... The HTmD is easily installed in the ... Alliance 2000 device and enables you to ...
Biology Products: