News tagged with vitamin e
Mouse study suggests vitamin E may weaken bones
(HealthDay) -- Vitamin E may stimulate cells that result in bone loss, a new study suggests.
Medical research
Mar 04, 2012 |
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Scientists identify an innate function of vitamin E
It's rubbed on the skin to reduce signs of aging and consumed by athletes to improve endurance but scientists now have the first evidence of one of vitamin E's normal body functions.
Medical research
Dec 20, 2011 |
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Use of vitamin E associated with increased risk of prostate cancer
In a trial that included about 35,000 men, those who were randomized to receive daily supplementation with vitamin E had a significantly increased risk of prostate cancer, according to a study in the October 12 issue of JAMA.
Cancer
Oct 11, 2011 |
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Vitamin E identified as potential weapon against obesity
A potential new way to fight obesity-related illness has been uncovered, thanks to serendipitous research led by investigators at the Case Western Reserve University School of Medicine.
Overweight and Obesity
Apr 23, 2013 |
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Quit smoking? Vitamin E may give extra boost to heart health
Taking a specific form of a vitamin E supplement can accelerate the health benefits that occur when people quit smoking, new research suggests. In the small study, improvement in blood vessel function associated with the ...
Health
Apr 23, 2013 |
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Vitamin E in diet protects against many cancers, form commonly used in supplements has no such benefit
Next time you need to choose between vegetable oil and margarine in that favorite recipe, think about your health and reach for the oil.
Health
Apr 23, 2012 |
5 / 5 (1) |
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Study shows how vitamin E can help prevent cancer
Researchers have identified an elusive anti-cancer property of vitamin E that has long been presumed to exist, but difficult to find.
Cancer
Mar 14, 2013 |
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Excess vitamin E intake not a health concern, study says
Despite concerns that have been expressed about possible health risks from high intake of vitamin E, a new review concludes that biological mechanisms exist to routinely eliminate excess levels of the vitamin, and they make ...
Health
Apr 15, 2013 |
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Clinical trial examines antioxidant effects for Alzheimer's disease on cerebrospinal fluid biomarkers
An antioxidant combination of vitamin E, vitamin C and α-lipoic acid (E/C/ALA) was not associated with changes in some cerebrospinal fluid biomarkers related to Alzheimer disease in a randomized controlled trial, according ...
Neuroscience
Mar 19, 2012 |
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Extra vitamin E linked to prostate cancer, but diet still merits study
(Medical Xpress) -- Taking vitamin E supplements appear to increase a man’s risk of prostate cancer, according to a study that appears in the Oct. 12 issue of the Journal of the American Medical Association.
Cancer
Oct 26, 2011 |
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Vitamin E may lower liver cancer risk
High consumption of vitamin E either from diet or vitamin supplements may lower the risk of liver cancer, according to a study published July 17 in the Journal of the National Cancer Institute.
Cancer
Jul 17, 2012 |
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New studies highlight risks of vitamin supplements
New research is prompting a fresh look at the value of vitamin supplements, with some surprising results indicating that taking too many supplements of some could be harmful.
Health
Oct 17, 2011 |
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Endotoxemia influenced by diet type
(HealthDay) -- A Western-style diet is associated with increased levels of endotoxin activity (endotoxemia), and a prudent-style diet (containing moderately greater amounts of omega-3 fatty acids, vitamin ...
Health
May 03, 2012 |
not rated yet |
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Taking vitamin E does not impact women's heart failure risk
Taking vitamin E supplements does not increase or decrease heart failure risk among women, according to a study in Circulation: Heart Failure, an American Heart Association journal.
Cardiology
Mar 20, 2012 |
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'Gifted' natural vitamin E tocotrienol protects brain against stroke in three ways
A natural form of vitamin E called alpha-tocotrienol can trigger production of a protein in the brain that clears toxins from nerve cells, preventing those cells from dying after a stroke, new research shows.
Medical research
Jul 05, 2011 |
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Vitamin E
Vitamin E is the collective name for a set of 8 related α-, β-, γ-, and δ-tocopherols and the corresponding four tocotrienols, which are fat-soluble vitamins with antioxidant properties. Of these, α-tocopherol (also written as alpha-tocopherol) has been most studied as it has the highest bioavailability.
It has been claimed that α-tocopherol is the most important lipid-soluble antioxidant, and that it protects cell membranes from oxidation by reacting with lipid radicals produced in the lipid peroxidation chain reaction. This would remove the free radical intermediates and prevent the oxidation reaction from continuing. The oxidised α-tocopheroxyl radicals produced in this process may be recycled back to the active reduced form through reduction by other antioxidants, such as ascorbate, retinol or ubiquinol. However, the importance of the antioxidant properties of this molecule at the concentrations present in the body are not clear and it is possible that the reason why vitamin E is required in the diet is unrelated to its ability to act as an antioxidant.. Other forms of vitamin E have their own unique properties. For example, γ-tocopherol (also written as gamma-tocopherol) is a nucleophile that may react with electrophilic mutagens; and the tocotrienols having specialized roles in protecting neurons from damage, cancer prevention and cholesterol reduction by inhibiting the activity of HMG-CoA reductase[16-1];δ-tocotrienol blocks processing of sterol regulatory element‐binding proteins (SREBPs)[16-1].However, the roles and importance of all of the various forms of vitamin E are presently unclear, and it has even been suggested that the most important function of vitamin E is as a signaling molecule, and that it has no significant role in antioxidant metabolism.
Most studies about vitamin E have supplemented using only the synthetic alpha-tocopherol, but doing so leads to reduced serum gamma- and delta-tocopherol concentrations. Moreover, a 2007 clinical study involving synthetic alpha-tocopherol concluded that supplementation did not reduce the risk of major cardiovascular events in middle aged and older men. For more info, read article tocopherol.
For more information about Vitamin E, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
