Navigation Links
Heavy multivitamin use may be linked to advanced prostate cancer

While regular multivitamin use is not linked with early or localized prostate cancer, taking too many multivitamins may be associated with an increased risk for advanced or fatal prostate cancers, according to a study in the May 16 issue of the Journal of the National Cancer Institute.

Millions of Americans take multivitamins because of a belief in their potential health benefits, even though there is limited scientific evidence that they prevent chronic disease. Researchers have wondered what impact multivitamin use might have on cancer risk.

Karla Lawson, Ph.D., of the National Cancer Institute in Bethesda, Md., and colleagues followed 295,344 men enrolled in the National Institutes of Health-AARP Diet and Health Study to determine the association between multivitamin use and prostate cancer risk. After five years of follow-up, 10,241 men were diagnosed with prostate cancer, including 8,765 with localized cancers and 1,476 with advanced cancers.

The researchers found no association between multivitamin use and the risk of localized prostate cancer. But they did find an increased risk of advanced and fatal prostate cancer among men who used multivitamins more than seven times a week, compared with men who did not use multivitamins. The association was strongest in men with a family history of prostate cancer and men who also took selenium, beta-carotene, or zinc supplements.

“Because multivitamin supplements consist of a combination of several vitamins and men using high levels of multivitamins were also more likely to take a variety of individual supplements, we were unable to identify or quantify individual components responsible for the associations that we observed,?the authors write.

In an accompanying editorial, Goran Bjelakovic, M.D., of the University of Nis in Serbia, and Christian Gluud, M.D., of Copenhagen University Hospital in Denmark, discuss the positive and negative health effects of antioxida nt supplements. “Lawson [and colleagues] add to the growing evidence that questions the beneficial value of antioxidant vitamin pills in generally well-nourished populations and underscore the possibility that antioxidant supplements could have unintended consequences for our health,?the authors write.
'"/>

Source:Journal of the National Cancer Institute


Related biology news :

1. Heavy smoking cuts womens chance of pregnancy -- even with donated oocytes
2. Newly discovered virus linked to childhood lung disorders and Kawasaki disease
3. Low level of extinction during ice age linked to adaptability
4. Improved statistical tools reveal many linked loci
5. Scientists at Galileo Pharmaceuticals confirm inflammatory response linked to glucose levels
6. Attacks of King George IIIs madness linked to key metabolism molecule
7. Gene controlling circadian rhythms linked to drug addiction
8. Physical and functional interaction of key cell growth molecules linked to cancer
9. VCU Massey Cancer Center study shows enzyme linked to spread of breast cancer cells
10. Naturally occurring asbestos linked to lung cancer
11. Disappearing arctic lakes linked to climate change

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/24/2017)... Research and Markets has announced the addition of the ... Forecast to 2025" report to their offering. ... The Global Biometric Vehicle Access System ... over the next decade to reach approximately $1,580 million by 2025. ... forecasts for all the given segments on global as well as ...
(Date:3/23/2017)... 23, 2017 Research and Markets has announced ... & Trends - Industry Forecast to 2025" report to their ... The ... CAGR of around 8.8% over the next decade to reach approximately ... the market estimates and forecasts for all the given segments on ...
(Date:3/22/2017)... NEW YORK , March 21, 2017 /PRNewswire/ ... Customer Marketing Cloud used by retailers such as ... in its platform — Product Recommendations and Replenishment. Using ... to give more personalized product and replenishment recommendations ... purchases, but also on predictions of customer intent ...
Breaking Biology News(10 mins):
(Date:3/27/2017)... ... March 27, 2017 , ... ... produce small, heterogeneous samples with limited tumor content in a large background of ... resolved, such as the need for reliable detection of low abundance somatic mutations, ...
(Date:3/27/2017)... DUBLIN , March 27, 2017 ... access to a comprehensive library of reports on Valero ... the transportation fuels and petrochemical industries. ...      (Logo: http://photos.prnewswire.com/prnh/20160330/349511LOGO) ... is biofuel production to go green. Ethanol today, even though ...
(Date:3/27/2017)... DarioHealth Corp. (NASDAQ: DRIO), a leading global ... solutions, today announced that it is now offering a ... consumers who want to have their DarioHealth products reimbursed ... alliance agreements with partners across the U.S. who will ... approved, will supply and bill the customer,s insurance for ...
(Date:3/24/2017)... Mar. 24, 2017 Research and Markets has ... Research - Global Strategic Business Report" report to their offering. ... This report ... in US$ Million. Annual estimates and forecasts are provided for the ... primary and secondary research. The report profiles 25 ...
Breaking Biology Technology: