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:8/18/2015)... , Aug. 17, 2015 Research ... addition of the "Global Biometric Authentication & ... - Estimation & Forecast, 2015-2020" report to ... authentication and identification systems market is expected to ... 2015 to 2020 and generate over $25 billion ...
(Date:8/12/2015)... , Aug. 12, 2015  Synaptics Inc. ... human interface solutions, today announced that four of ... Match-in-Sensor solution, have officially been named FIDO Certified™ ... part of the certification, Synaptics, Natural ID™ fingerprint ... Universal Authentication Framework (UAF) standard and are interoperable ...
(Date:8/6/2015)... Germany , August 6, 2015 ... (SMI) shows the world,s first Eye Tracking ... Epson,s Moverio BT-200 see-through head mounted display and on ... unprecedented quality and efficiency is brought to personalized visualization ... the first time, professionals and researchers can integrate gaze, ...
Breaking Biology News(10 mins):Global Biometric Authentication & Identification Market 2015: Focus On Modality, Motility & Application - Estimation & Forecasts to 2020 for the $25 Billion Industry 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 3SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 2SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 3
... of Harvard and MIT today announced that they have ... from the National Institutes of Health (NIH) to identify ... can probe the proteins, signaling pathways and cellular processes ... Broad Institute is among nine institutions to receive funding ...
... America,s population, diabetes can lead to blindness, kidney failure, strokes ... new cure based on advances in cell therapy ... TAU,s Sackler Faculty of Medicine, whose research group is among ... to cultivate cells derived from insulin-producing beta cells from human ...
... Spanish . , Background , Many ... in childhood or adolescence. In fact some studies show that ... diagnostic criterion for a mental disorder before reaching adulthood. The ... serious in children than in adults in fact, childhood ...
Cached Biology News:Broad Institute awarded grant to develop chemical probes for human biology and disease 2Broad Institute awarded grant to develop chemical probes for human biology and disease 3Battling diabetes with beta cells 2Risks and benefits of antipsychotics in children and adolescents 2Risks and benefits of antipsychotics in children and adolescents 3Risks and benefits of antipsychotics in children and adolescents 4Risks and benefits of antipsychotics in children and adolescents 5
(Date:8/28/2015)... ... August 28, 2015 , ... Riordan-McKenna Institute ... announced today that the use of sterile, dehydrated amniotic tissue AlphaPATCHâ„¢ developed by ... otherwise non-healing surgical knee wound. , The case involved a 78-year-old male, who ...
(Date:8/27/2015)... CA (PRWEB) , ... August 27, 2015 , ... ... unique opportunity for venture capital funds, investment firms and animal health companies to ... Forum have raised $160 million. Several have also received licensing agreements or distribution ...
(Date:8/27/2015)... Aug. 27, 2015  Neogen Corporation (NASDAQ: NEOG ... of United Kingdom -based Lab M ... media and diagnostic systems. Lab M ... leading provider of microbial testing and diagnostic products for ... The company currently sells into more than 70 countries ...
(Date:8/27/2015)... 27, 2015 The National Necrotizing Fasciitis ... life—were saved by doctors at Vanderbilt University Hospital in ... NovaBay Pharmaceuticals and Dr. John Crew , director ... Seton Medical Center in Daly City, CA. ... breakthrough approach, pioneered by Dr. Crew, that had previously ...
Breaking Biology Technology:Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 2Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 3Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 4VetStem Biopharma, Inc. Among Seventeen Companies Selected to Present at the KC Animal Health Investment Forum on September 1st 2015 2VetStem Biopharma, Inc. Among Seventeen Companies Selected to Present at the KC Animal Health Investment Forum on September 1st 2015 3Neogen acquires U.K.-based Lab M Holdings 2Patient's Life and Eyes Saved from Gruesome Flesh-Eating Infection Consuming Her Face 2Patient's Life and Eyes Saved from Gruesome Flesh-Eating Infection Consuming Her Face 3
... "BioMS/Eli Lilly - Dissecting a Billion Dollar Collaboration" ... - BioMS Medical Corp (TSX: MS), a leading ... today announced that Mr. Richard Brown, Vice President, ... Senior Director, Corporate Business Development, Eli Lilly and ...
... May 14 - Bioniche Pharma, a leading ... launch of Enlon (R) (edrophonium chloride injection, ... sulfate, USP) Injection. (Logo: http://www.newscom.com/cgi-bin/prnh/20080702/AQW070LOGO )"The ... Bioniche,s continued growth and a commitment to bringing ...
... 14 Nucletron, a,knowledge-based leader in radiation ... Brachy, a comprehensive film- and volume-based treatment,planning ... brachytherapy.,Oncentra Brachy, the world,s first fully DICOM-compatible ... system that features,state-of-the-art optimization algorithms to ensure ...
Cached Biology Technology:BioMS Medical to participate in panel session at Bio International Convention 2009 2Nucletron Releases Comprehensive Film-and Volume-Based Planning System for Wide Variety of Brachy Solutions 2
...
Anti Autotaxin /ENPP2 , - (Rabbit)...
...
... An N-nitroso-containing diabetogenic compound that acts ... pancreatic islets. An antibiotic effective against ... DNA strand breaks in pancreatic islet ... in H 2 O. RTECS LZ5775000, ...
Biology Products: