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Taking a Vitamin D supplement every day, can help you live longer, a new European study claims. |
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Vitamin E has failed to prevent heart attacks because dosages taken were far too low, according to a new study from Vanderbilt University, but the solution is not as simple as taking larger amounts of the vitamin. According to the study, published in Free Radical Biology and Medicine, the extremely high dosages of vitamin E required to produce significant benefits may not be safe. However, MeridiumXN™, a novel dietary supplement from BioNovix, offers a solution to this dilemma. [click link for full article] |
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High antioxidant intake has been shown to reduce cancer risk and may also mitigate the effects of oxidative DNA damage, which is hypothesized to be causally linked to carcinogenesis. This study examined potential racial differences in (a) dietary intakes and plasma concentrations of vitamin C, vitamin E, and carotenoids and oxidative DNA damage and (b) associations between plasma antioxidants and oxidative DNA damage. Data were from a cross-sectional study of 164 generally healthy nonsmoking African-Americans and Whites in North Carolina, ages 20 to 45 years, equally distributed by race and sex. Participants completed a demographic and health questionnaire, four 24-h dietary recalls, and a dietary supplement inventory; had height and weight measured; and provided a semifasting blood sample. African-Americans had statistically significantly lower plasma concentrations of vitamin E, -carotene, ß-carotene, and lutein + zeaxanthin than Whites, as well as lower self-reported intake of most antioxidants. Levels of oxidative DNA damage, measured using the alkaline comet assay, were lower in African-Americans than Whites. An inverse association between lycopene and oxidative DNA damage (r = –0.20; P = 0.03) was found in the combined study population after adjusting for sex, age, body mass index, passive smoke exposure, physical activity, education, income, and alcohol intake. There was also a positive association of vitamin E with oxidative DNA damage in the total population (r = 0.21; P = 0.02) and in African-American men (r = 0.63; P = 0.01) after adjusting for covariates. This study is among the first to examine these associations in a sample of healthy adults with an adequate representation of African-Americans. (Cancer Epidemiol Biomarkers Prev 2007;16(7):1428–36) |
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Supplemental vitamin E (-tocopherol) has been linked to lower prostate cancer incidence in one randomized trial and several, although not all, observational studies. The evidence regarding dietary intake of individual vitamin E isoforms and prostate cancer is limited and inconclusive, however. We prospectively examined the relations of supplemental vitamin E and dietary intakes of -, ß-, -, and - tocopherols to prostate cancer risk among 295,344 men, ages 50 to 71 years and cancer-free at enrollment in 1995 to 1996, in the NIH-AARP Diet and Health Study. At baseline, participants completed a questionnaire that captured information on diet, supplement use, and other factors. Proportional hazards models were used to estimate relative risks (RR) and 95% confidence intervals (95% CI) of prostate cancer. During 5 years of follow-up, 10,241 incident prostate cancers were identified. Supplemental vitamin E intake was not related to prostate cancer risk (for >0-99, 100-199, 200-399, 400-799, and ≥800 IU/d versus never use: RR, 0.97, 0.89, 1.03, 0.99, and 0.97 (95% CI, 0.87-1.07) respectively; Ptrend = 0.90). However, dietary -tocopherol, the most commonly consumed form of vitamin E in the United States, was significantly inversely related to the risk of advanced prostate cancer (for highest versus lowest quintile: RR, 0.68; 95% CI, 0.56-0.84; Ptrend = 0.001). These results suggest that supplemental vitamin E does not protect against prostate cancer, but that increased consumption of -tocopherol from foods is associated with a reduced risk of clinically relevant disease. The potential benefit of -tocopherol for prostate cancer prevention deserves further attention. (Cancer Epidemiol Biomarkers Prev 2007;16(6):1128–35) |
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Vitamin E compound fights breast cancer spread A report published in the October, 2006 issue of the journal Cancer Research (http://cancerres.aacrjournals.org/) described the finding of researchers at the University of Arizona that a modified form of vitamin E significantly reduced the metastasis of mammary cancer in mice. The study is the first to demonstrate that the compound has a strong anticancer property when administered as a dietary supplement. . |
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Pittsburgh based Associates in Ophthalmology (AIO), is very pleased to announce a new program offering nutritional vitamin supplements to promote eye care through a partnership with Douglas Laboratories. For over a century, Associates in Ophthalmology and the talented surgeons Dr. Daniel V. Zimmer, Dr. Brian Jewart, Dr. Lisa M. Cibik, Dr. Miguel Busquets, Dr. John P. Nairn and Dr. Martin Boscarino have been a leader in providing Pennsylvania eye care. [click link for full article] |
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EVERY retail trend has its excesses. In the late 90s, the natural supplement fad reached a zenith with the introduction of potato chips laced with St. |
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Background:
Psychological stress and negative mood have been related to increased vulnerability to influenza-like illness (ILI). This prospective study re-evaluated the predictive value of perceived stress for self-reported ILI. We additionally explored the role of the negative affectivity and social inhibition traits.
Methods:
In this study, 5,404 respondents from the general population were assessed in terms of perceived stress, personality, and control variables (vaccination, vitamin use, exercise, etc.). ILI were registered weekly using self-report measures during a follow-up period of four weeks.
Results:
Multivariable logistic regression analysis on ILI was performed to test the predictive power of stress and personality. In this model, negative affectivity (OR=1.05, p=0.009), social inhibition (OR=0.97, p=0.011), and perceived stress (OR=1.03, p=0.048) predicted ILI reporting. Having a history of asthma (OR=2.33, p= (Source: BMC Public Health - Latest articles) |
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Babies whose mothers do not get enough essential B vitamins around the time of conception could be more at risk of Type 2 diabetes.A study of female sheep showed that reducing their intake of B12 and folate (a form of vitamin B9) before pregnancy produced major physical effects in their offspring.At only two years of age, the sheep showed signs of insulin resistance and were 25 per cent fatter than normal with higher blood pressure. [click link for full article] |
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Several studies published in a special supplement of the Journal of General Internal Medicine report examined various disparities in quality of care between people with limited-English proficiency and those who speak English, HealthDay/Washington Post reports. According to a news release on the supplement, an estimated 20 million people in the U.S., or one in 15, speak little to no English. [click link for full article] |
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