Navigation Links
Supplements and cancer prevention: A cautionary tale
Date:4/25/2012

Government regulators and the scientific community should work to ensure that they give clear guidance to the public about dietary supplements and cancer risk, according to a commentary published April 25 in the Journal of the National Cancer Institute.

Evidence from animal, in vitro and observational studies has suggested that taking dietary supplements may lower cancer risk. However, the small number of randomized controlled studies, the gold standard in evidence-based medicine, has not confirmed thisand some studies have actually shown that supplements may increase cancer risk. Still, the supplement industry is booming, with estimated annual sales at $30 billion in the U.S.

To examine the potential role of dietary supplements and cancer risk, Maria Elena Martinez, Ph.D., of the University of California San Diego Moores Cancer Center and colleagues, looked at observational studies of several supplements, including anti-oxidants, folic acid, vitamin D, and calcium. Several observational studies found that diets high in fruits and vegetables were associated with lower risk of certain cancers, including respiratory and gastrointestinal. Specifically, with respect to anti-oxidant supplements, the authors found that: "The importance of oxidative stress for carcinogenesis does not establish that the administration of supplemental antioxidants will protect against the carcinogenesis that oxidative stress may induce." Furthermore, they write, "Supplementation by exogenous antioxidants may well be a two-edged sword; these compounds could, in vivo, serve as pro-oxidants or interfere with any of a number of protective processes such as apoptosis induction." Indeed, several antioxidant trials the researchers examined reported increased cancer risks with supplementation. They looked at trials with supplements using folic acid, vitamin D and calcium, among other compounds.

The researchers caution against taking dietary supplements for c
'/>"/>

Contact: Zachary Rathner
Zachary.Rathner@oup.com
301-841-1286
Journal of the National Cancer Institute
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Reliv Foundation Donates $450,000 In Nutritional Supplements to Haitian Relief Efforts
2. Buy HGH Website Educates Consumers on the Pros and Cons of Human Growth Hormone Supplements
3. ConsumerLab.com Finds Carcinogenic form of Chromium in Supplements, Including Those for Weight Loss
4. DiscountSupplements.com Launches Website With the Cheapest Supplements Prices and Fastest Shipping
5. IN Pet Supplements Face Challenges in New China Market as Imitation Products Continue to Baffle Consumers
6. ProbioticSmart.com Re-Launches Newly Expanded Online Store for Human, Pet, and Livestock Health Products and Supplements
7. Arsa Offers High Quality Supplements, Cosmetics and Magic Scents from Mexico for Less Than $10
8. Supplements Might Reduce Breast Cancer Risk
9. DHA Supplements for Mom Good for Preemies
10. The effect of dietary supplements, acids and animal protein on gastrointestinal disorders
11. High doses of antioxidant supplements induce stem cell genetic abnormalities
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/23/2014)... AB (PRWEB) July 23, 2014 ... of in-home care for seniors, is proud to announce ... Series featuring experts in a wide range of health ... clinical social worker and award-winning author Nancy Kriseman, and ... and ways to prevent burnout by becoming more self-aware. ...
(Date:7/23/2014)... News) -- Regularly checking the pulse of a stroke ... "Screening pulse is the method of choice for checking ... have never had a stroke. Our study shows it ... to identify people who might need more thorough monitoring ... Bernd Kallmunzer, of Erlangen University in Germany. ...
(Date:7/23/2014)... The National Institute of Biomedical Imaging and Bioengineering ... Symposium on July 30, 2014 on the NIH campus. ... investigators covering a wide breadth of NIBIB-funded research. ... Cohen, Harvard, Engineering Microbial Rhodopsins as Optical Voltage Sensor, ... Fluorescently Labeled Probes for Nerve Imaging ...
(Date:7/23/2014)... Angeles, CA (PRWEB) July 23, 2014 ... practices delivering Enhanced External Counterpulsation (EECP), is ... who receives EECP therapy at the health center. ... ischemic heart disease. Since receiving ongoing EECP therapy since ... , When Sara Soulati, CEO of Global Cardio Care, ...
(Date:7/23/2014)... Fragile X syndrome ( FXS ) is a genetic ... behaviors on the autistic spectrum, as well as cognitive ... mental impairment and the most common cause of autism. ... Riverside have published a study that sheds ... Appearing online today (July 23) in the Journal ...
Breaking Medicine News(10 mins):Health News:Home Care Assistance Calgary to Host Public Webinar on the Topic of Caregiver Mindfulness 2Health News:Home Care Assistance Calgary to Host Public Webinar on the Topic of Caregiver Mindfulness 3Health News:Routine Pulse Check May Prevent Second Stroke, Study Says 2Health News:Global Cardio Care Celebrates EECP Patient’s 100th Birthday 2Health News:Study links enzyme to autistic behaviors 2Health News:Study links enzyme to autistic behaviors 3
... ATLANTA , March 17 Stonebranch, the industry ... businesses and Job Scheduling technology , announced today ... Safe Harbor: What the HITECH Act Means for U.S. Healthcare ... recent healthcare regulations and how healthcare organizations (HCOs), related covered ...
... rate is higher with metal staples, review finds , ... common when orthopedic surgeons use metal staples instead of ... , Infections after surgery can lead to longer hospital ... hip replacement. Infected wounds can also cause serious complications. ...
... March 17 Anatomist and Inventor of Plastination, Dr. ... present their new exhibition, BODY WORLDS of ... premiering at the Neunkirchen Zoo in Germany , beginning ... menagerie, the display features the most revered species in the animal ...
... ... extend to visualize all network communications in the enterprise and those extending out to ... ... of a major update to its Versiera Infrastructure Management System, including new groundbreaking technology ...
... ... Health Makeover Contest and announces that they are increasing the amount of smile makeover winners ... ... nation’s foremost voice in unbiased, expert advice on how to care for your smile and ...
... ... Strategic Leadership Development program for its current and potential physician leaders, through New York ... ... participating in a Strategic Leadership Development program for its current and potential physician leaders. ...
Cached Medicine News:Health News:Stonebranch Publishes Healthcare IT White Paper 2Health News:Stonebranch Publishes Healthcare IT White Paper 3Health News:Stonebranch Publishes Healthcare IT White Paper 4Health News:Gunther von Hagens' BODY WORLDS of Animals Opening March 19 at the Neunkirchen Zoo 2Health News:Gunther von Hagens' BODY WORLDS of Animals Opening March 19 at the Neunkirchen Zoo 3Health News:Versiera Enables Cloud and Enterprise Network Visualization 2Health News:Versiera Enables Cloud and Enterprise Network Visualization 3Health News:Dear Doctor Magazine Reveals Makeover Contest Winner's Results and Expands Contest to Include Additional Winners 2Health News:Dear Doctor Magazine Reveals Makeover Contest Winner's Results and Expands Contest to Include Additional Winners 3Health News:Summit Medical Group Prepares Physicians for Future Leadership 2
(Date:7/23/2014)... 2014 Announced at the 20 th ... agreement seeks to increase access to a promising new HIV ... 2014 conference in Melbourne today, the ... Gilead Sciences for tenofovir alafenamide (TAF), a promising new medicine ... in India and China ...
(Date:7/23/2014)... 2014 Today,s U.S. Food and Drug ... with relapsed chronic lymphocytic leukemia (CLL), follicular lymphoma ... significant advance for patients with these blood cancers.  ... trade name Zydelig®, is a first-in-class inhibitor of ... in many B-cell malignancies and plays a critical ...
(Date:7/23/2014)... ALTO, Calif., July 23, 2014  Varian Medical Systems ... earnings of $1.02 per diluted share in the third ... impacted by about $0.06 per diluted share due to ... portion of Varian,s existing equity investment in Augmenix, a ... company-wide revenues totaled $748 million for the third quarter ...
Breaking Medicine Technology:The Medicines Patent Pool (MPP) Broadens Collaboration with Gilead Sciences: Signs Licence for Phase III Medicine Tenofovir Alafenamide (TAF) 2The Medicines Patent Pool (MPP) Broadens Collaboration with Gilead Sciences: Signs Licence for Phase III Medicine Tenofovir Alafenamide (TAF) 3The Leukemia & Lymphoma Society Applauds FDA's Approval of Idelalisib To Treat Three Types of Blood Cancers 2Varian Medical Systems Reports Results for Third Quarter of Fiscal Year 2014 2Varian Medical Systems Reports Results for Third Quarter of Fiscal Year 2014 3Varian Medical Systems Reports Results for Third Quarter of Fiscal Year 2014 4Varian Medical Systems Reports Results for Third Quarter of Fiscal Year 2014 5Varian Medical Systems Reports Results for Third Quarter of Fiscal Year 2014 6Varian Medical Systems Reports Results for Third Quarter of Fiscal Year 2014 7Varian Medical Systems Reports Results for Third Quarter of Fiscal Year 2014 8Varian Medical Systems Reports Results for Third Quarter of Fiscal Year 2014 9Varian Medical Systems Reports Results for Third Quarter of Fiscal Year 2014 10
... Truphatek has successfully enticed one of the best known professionals in ... , Dan White , formerly of ... a new US subsidiary of Truphatek http://www.truphatek.com/ ... I may be reached after this week at 573-240-0002 or by e-mail ...
... , NEWARK, Calif., Oct. 6 Extending its reach ... North America, Inc. has signed ... distribute its perfluoroelastomer sealing components and provide local applications ... are integral in the ultraclean manufacturing of semiconductors, solar ...
Cached Medicine Technology:New Places and People - Truphatek opens USA subsidiary 2New Places and People - Truphatek opens USA subsidiary 3Applied Seals North America Extends Global Network With Addition of Distributor in Europe 2
... is a national reference laboratory and a ... development. ARUP offers an extensive test menu ... in clinical and anatomic pathology. Owned by ... include more than half of the nation's ...
... is a national reference laboratory and a ... development. ARUP offers an extensive test menu ... in clinical and anatomic pathology. Owned by ... include more than half of the nation's ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
... national reference laboratory and a worldwide leader ... offers an extensive test menu of highly ... and anatomic pathology. Owned by the University ... than half of the nation's university teaching ...
Medicine Products: