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:3/23/2015)... NEW YORK , March 23, 2015   ... digital property management company, today announced that the Company ... platform for both enterprise and consumers at Connect:ID on ... D.C. HOYOS Labs will highlight the IEEE ... 1U TM ; and enterprise access control system. ...
(Date:3/20/2015)... , Mar. 19, 2015 Research and Markets ... "Hand Geometry - Global Strategic Business Report" report to ... for Hand Geometry in US$ Thousands. The report provides separate ... Japan , Europe , ... , and Rest of World. Annual estimates and ...
(Date:3/18/2015)... SPRINGS, Florida , March 18, 2015 ... well as businesses, new revolutionary smart wallets and apps continue ... pace.  Companies currently entrenched in the mobile payment industry in ... Alibaba Group Holding Ltd. (NYSE: BABA ), Apple ... GOOG ) and Facebook Inc. (NASDAQ: FB ...
Breaking Biology News(10 mins):HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 2Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 4Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 2Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 3Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 4Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 5Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 6
... Exploration at Arizona State University and an international committee ... classification today announce the top 10 new species ... pea-sized seahorse, caffeine-free coffee and bacteria that live in ... very tiny (a snake just a slither longer than ...
... Winnacker, the former President of the Deutsche Forschungsgemeinschaft ... of the Rising Sun, Gold Rays with Neck ... years of service to scientific cooperation between Japan ... and research. Professor Winnacker received the Order, together ...
... Office of Naval Research (ONR) funded Nobel Prize-winning ... distinguished lecture series May 19. Phillips, compelling presentation, ... the importance of basic research and ONR,s legacy ... attendees at Phillips, lecture were Dr. Delores M. ...
Cached Biology News:Scientists announce top 10 new species; issue SOS 2Scientists announce top 10 new species; issue SOS 3Scientists announce top 10 new species; issue SOS 4Scientists announce top 10 new species; issue SOS 5Ernst-Ludwig Winnacker awarded the Order of the Rising Sun 2Ernst-Ludwig Winnacker awarded the Order of the Rising Sun 3Nobel Laureate underscores importance of investment in basic research 2
(Date:4/24/2015)... DIEGO , April 24, 2015  Pfenex Inc. ... the development of biosimilar therapeutics including high value and ... its follow-on public offering of 6,000,000 shares of its ... $15.50 per share. Of the shares being offered, 2,610,000 ... shares are being offered by existing stockholders. Pfenex will ...
(Date:4/23/2015)... MN (PRWEB) April 24, 2015 Ralco ... with Advanced Birthright Nutrition® (ABN) for the exclusive worldwide ... Cup. The new technology is a new in-line milk ... producers by allowing them to move supplementation milk cups ... , “This technology lets producers get Birthright™ ...
(Date:4/23/2015)... 2015 Six startups from Russia ... 4-17 as part of the U.S.-Russia Innovation Corridor ... of biotechnology startups to participate in the program ... and the University of Maryland (UMD) signed a ... respective universities in the biomedical industry in 2013. ...
(Date:4/23/2015)... 2015  Veracyte, Inc. (NASDAQ: VCYT ) today ... to sell approximately $40 million of its common stock ... will purchase an aggregate of 4,907,975 shares of common ... the closing stock price on April 22, 2015. The ... including Broadfin Capital, Camber Capital, Deerfield, Longwood Capital Partners ...
Breaking Biology Technology:Pfenex Inc. Announces Pricing Of Follow-on Offering 2Ralco Acquires License to Birthright™ Moveable Milk Cup 2U.S.-Russian Innovation Corridor Program Connects Visiting Russian Startups to U.S. Experts 2U.S.-Russian Innovation Corridor Program Connects Visiting Russian Startups to U.S. Experts 3U.S.-Russian Innovation Corridor Program Connects Visiting Russian Startups to U.S. Experts 4Veracyte, Inc. Announces $40 Million Private Placement 2Veracyte, Inc. Announces $40 Million Private Placement 3Veracyte, Inc. Announces $40 Million Private Placement 4
... Got Game (2004, Harvard Business School Press) takes a ... who grew up playing them. , ,Authors John C. ... and surveys to give business managers a lesson on how ... whose ways of thinking on competitiveness, risk-taking and everything ...
... top video-game researchers will show off developments in games that ... Madison. , ,The Academic Advanced Distributed Learning Co-Laboratory , ... titled Discover how Games are Shaping Business and Learning, which ... can be applied to the workforce. , ,The video game ...
... Milwaukee Froedtert Hospital and the Medical College ... research and office space to their cancer center, to be ... $120 million project, beginning this spring, that will give the ... 67,000 square feet to its hospital for cardiovascular and neuroscience ...
Cached Biology Technology:Got Game makes big claims; can 90 million people think the same? 2Businesses and educators to preview video games for training 2Businesses and educators to preview video games for training 3
... Antibody - Red, 20X ... antibody at 20X concentration for use ... assays. Quality Assurance ... FarRed fluorescence polarization assays. ...
Kinase Buffer can be used to assay protein kinase activity...
Goat polyclonal to SPFH2 ( Abpromise for all tested applications). Antigen: Synthetic peptide: EDEPLETATKEN, corresponding to C terminal amino acids 328-339 of Human SPFH2 Entrez Gene ID: 11...
Anti-Kusabira Orange Monoclonal Antibody Description: 100 g Research Focus: tag Storage: -20C Shipping Temperature: 4C...
Biology Products: