High doses of selenium and vitamin E use could hike the risk of prostate cancer in men, a recent study revealed.
In a separate study, results found vitamin D use may bolster a woman’s chances of surviving breast cancer.
At Doctors Supplement Store, we can take over the management of your medical practice’s in-house supplement business, allowing doctors, nurses and staff to concentrate on treating patients. The Natural Standard recently reported on the studies regarding vitamin E and vitamin D.
Selenium is a trace mineral found in water, soil, and some foods. Selenium’s use as a method to prevent cancer has been debated for some time. In 2008, the government stopped a study known as the Selenium and Vitamin E Cancer Prevention Trial, or SELECT. The study was testing to determine if vitamin E and selenium, taken alone or in tandem, could help prevent prostate cancer. Early reviews revealed the supplements to be ineffective – and possibly unhealthy.
During the recent study, researchers reviewed information from the earlier SELECT study to determine how selenium and vitamin E supplements impacted men, based on their levels of nutrients prior to supplementation.
Research indicated that use of selenium supplements, taken alone and in tandem with vitamin E, did not impact the risk of prostate cancer in men who registered low selenium levels prior to supplementation.
But selenium supplementation dramatically hiked the risk of prostate cancer, by 91 percent, in men who registered higher selenium levels prior to using the supplements.
In addition, vitamin E supplement use did not affect the risk of prostate cancer in men with higher selenium levels. It did increase the risk among men who had lower selenium levels at the study’s start.
Researchers determined selenium supplementation did not decrease prostate cancer risk in men with low selenium levels, and increased the risk among those with high levels. It was determined that selenium supplementation may provide no benefits in reducing prostate cancer risk and should not be used at levels above daily recommendations.
Likewise, researchers said vitamin E should not be used in doses above the recommended daily intake.
In another study, the Standard reported that breast cancer patients with higher vitamin D levels are more likely to survive breast cancer than those with lower levels.
Vitamin D helps maintain normal blood levels of calcium and phosphorus and can be used alone, or with calcium, to improve bone health and decrease fracture risks.
Numerous studies have examined the relationship between vitamin D and cancer, and positive beneficial results have been reported with vitamin D use, whether it’s taken alone or with calcium.
Recently analyzed information was taken from five studies to analyze the relationship between vitamin D use and survival rates for breast cancer patients. Data was assessed using death rates after breast cancer was diagnosed.
Researchers reported that patients with the highest vitamin D blood levels were half as likely to die from breast cancer compared to those with the lowest levels of vitamin D. Researchers said vitamin D levels should be monitored and maintained within a normal range – 30 to 80 nanograms per milliliter of blood.
The authors said breast cancer patients with high vitamin D levels are nearly twice as likely to survive than those patients with lower levels. Additional research is likely necessary to confirm the findings.
According to its website, the Natural Standard provides evidence-based data regarding natural medicine, herbs, dietary supplements, vitamins, minerals and more.