A study in Cancer Epidemiology, Biomarkers and Prevention found postmenopausal women with the highest serum levels of an active form of vitamin B6 were 30 percent less likely to be diagnosed with invasive breast cancer. The link appeared limited to hormone receptor-positive tumors.
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Vitamins
Research on vitamins A through K, deficiencies and supplementation.
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Vitamins
Vitamin D may cut lethal prostate cancer risk
Men with the highest blood levels of 25-hydroxyvitamin D were 57 percent less likely to develop lethal prostate cancer than those in the lowest quartile, in a study of 1,260 patients and 1,331 controls. Vitamin D levels showed no link to non-lethal prostate cancer.
Vitamins
3 Reasons You May Not be Getting Enough Vitamin D this Summer
Mercola argues most people get too little sun rather than too much, citing estimates that 85 percent of Americans and over 95 percent of seniors are vitamin D deficient. He contends sun-derived vitamin D beats oral supplements and fortified milk, which carries about 400 IU per quart.
Vitamins
Vitamin D supplements helps treat type 2 diabetes mellitus
Saudi researchers gave 92 people with type 2 diabetes 2,000 IU of vitamin D daily for 18 months. LDL cholesterol fell 18 percent and total cholesterol 9 percent, while blood levels of the vitamin rose from 32.2 to 54.7 nmol/L.
Vitamins
Vitamin D deficiency linked to myocardial infarction
Among 547 patients whose mean vitamin D was 14.4 ng/mL, men with low levels were more likely than women to have diabetes, dyslipidemia, myocardial infarction and documented coronary artery disease. Those with hypertension were 8 times as likely to have coronary artery disease.
Vitamins
Multivitamins may cut myocardial infarction risk in some women
Among 31,671 Swedish women with no history of cardiovascular disease, those who used multivitamins were 27 percent less likely to have a heart attack over 10 years than non-users, and 30 percent less likely if they took other supplements too.
Vitamins
Multiple Sclerosis News: Vitamin D fights multiple sclerosis (MS) - study
Researchers tracked 73 relapsing-remitting MS patients for 1.7 years, testing vitamin D every eight weeks. Those with the highest levels were about 50 percent less likely to relapse, and each doubling of vitamin D was tied to a 27 percent lower exacerbation rate, Neurology reports.
Vitamins
Vitamin D helps fight HIV virus, tuberculosis
A PLoS Pathogens study reports that the active form of vitamin D induced cathelicidin and autophagy in macrophages co-infected with HIV and M. tuberculosis, curbing both viral replication and mycobacterial growth. Low vitamin D tracked with faster HIV progression.
Vitamins
Vitamin E cuts prostate cancer risk, so does vitamin C
In an Italian study of 1,294 men with prostate cancer and 1,451 controls, those with the highest vitamin E intake were 22% less likely to have the disease and those with the highest vitamin C intake 14% less likely. Age, body mass index and family history did not change the associations.
Vitamins
Vitamin D supplements may help chronic obstructive pulmonary disease (COPD)
In a year-long trial of 182 COPD patients, 100,000 IU of vitamin D every four weeks raised blood levels but left exacerbations, lung function, hospitalization and deaths unchanged overall. Among the 30 patients with severe deficiency, supplementation was tied to 43 percent fewer exacerbations.
Vitamins
Vitamin D May Help HIV carriers
Among 1,103 HIV-infected Tanzanian adults on antiretroviral therapy, those deficient in vitamin D were twice as likely to die over 21 months as those with sufficient levels, while insufficiency showed no significant link with death, a PLoS One analysis found.
Vitamins
Vitamin E prevents liver cancer
Among 132,837 Shanghai adults, higher vitamin E intake from food or supplements tracked with lower liver cancer risk, regardless of liver health. Supplemental vitamin C and multivitamins were tied to higher risk in those with liver disease or a family history of liver cancer.
Vitamins
Stroke is deadly, vitamin D cuts the risk
Among 8,006 Japanese-American men in Hawaii followed 34 years, those with the lowest dietary vitamin D intake were 22% more likely to have a stroke and 27% more likely to have a thromboembolic stroke than those with the highest. Hemorrhagic stroke showed no significant link.
Vitamins
Vitamin D linked to lower risk of breast cancer, colorectal cancer
Marian L. Neuhouser and colleagues found people with the lowest vitamin D levels were more than twice as likely to develop colorectal cancer and about 33 percent more likely to develop breast cancer. After multivariate adjustment, the breast cancer link lost significance.
Vitamins
Alpha-tocopherol protects against prostate cancer in smokers
Men with the highest serum alpha-tocopherol were 37 percent less likely to develop prostate cancer than those with the lowest, but only among smokers and recent quitters. Men with the highest gamma-tocopherol levels were 35 percent more likely to be diagnosed.
Vitamins
High vitamin D levels better breast cancer outcomes
In a Belgian study in Carcinogenesis, breast cancer patients with lower serum 25-hydroxyvitamin D3 at diagnosis tended to have larger tumors, and higher levels tracked with better overall and disease-specific survival over three years, most strongly among postmenopausal women.
Vitamins
New Studies on 3 Important Nutrients
Mercola argues calcium is better taken from food than from pills, citing a study in Heart that found regular supplement users had an 86 percent greater heart attack risk while dietary calcium carried none, and points to new findings on turmeric and resveratrol.
Vitamins
Vitamin D2 or D3, which should you take?
A meta-analysis in the American Journal of Clinical Nutrition found vitamin D3 raised serum 25(OH)D concentrations significantly more than vitamin D2. D3 usually comes from animal sources such as wool and D2 from plants such as mushrooms; both are believed helpful.
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