News tagged with vitamin e
(HealthDay) -- Vitamin E may stimulate cells that result in bone loss, a new study suggests.
Medical research Mar 04, 2012 | 4.4 / 5 (7) | 2 |
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 | 4.8 / 5 (16) | 4 |
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 | 5 / 5 (4) | 7 |
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 | 5 / 5 (1) | 0
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 | 5 / 5 (2) | 0 |
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) | 0 |
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 | 5 / 5 (1) | 0 |
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 | not rated yet | 1 |
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 | 4 / 5 (1) | 0
(Medical Xpress) -- Taking vitamin E supplements appear to increase a mans 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 | 5 / 5 (1) | 6 |
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 | 4 / 5 (1) | 0
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 | 1.8 / 5 (4) | 5
(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 | 0
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 | not rated yet | 0
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 | 4.5 / 5 (2) | 0 |
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
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