News tagged with antioxidants
Like any factory, the body burns oxygen to get energy for its various needs. As a result, detrimental byproducts are released and our cells try to clean up shop with antioxidants. But as we age, this process ...
Medical research Mar 04, 2013 | 4.3 / 5 (3) | 0 |
New research suggests that increased consumption of foods containing colorful carotenoids, particularly beta-carotene and lutein, may prevent or delay the onset of amyotrophic lateral sclerosis (ALS). The study, published ...
Neuroscience Jan 29, 2013 | not rated yet | 0 |
In a new paper he regards "among my most important work since the double helix," Nobelist James Watson sets forth a novel hypothesis regarding the role of oxidants and antioxidants in cancers that are currently incurable, ...
Cancer Jan 08, 2013 | 5 / 5 (4) | 0 |
Herbs widely used throughout history in Asian and early European cultures have received renewed attention by Western medicine in recent years. Scientists are now isolating the active compounds in many medicinal ...
Ophthalmology Nov 27, 2012 | 4.2 / 5 (6) | 1 |
Low antioxidant levels contribute to increased blood pressure during exercise for people with peripheral arterial disease, according to researchers at Penn State Hershey Heart and Vascular Institute.
Cardiology Nov 08, 2012 | 5 / 5 (1) | 0 |
Animal-model research examines molecular mechanisms for blood-pressure lowering effect of ancient Chinese therapy
(Medical Xpress)—An increase in antioxidant enzymes triggered by acupuncture appeared to play a role in reducing high blood pressure in hypertensive rats treated with the ancient Chinese therapy, a study ...
Health Nov 02, 2012 | not rated yet | 0 |
Eating tomatoes and tomato-based foods is associated with a lower risk of stroke, according to new research published in the October 9, 2012, print issue of Neurology, the medical journal of the American Academ ...
Health Oct 08, 2012 | 5 / 5 (4) | 0 |
(Medical Xpress)—Eating an apple a day might in fact help keep the cardiologist away, new research suggests.
Health Oct 02, 2012 | 5 / 5 (9) | 3 |
Twenty-five years ago the term "antioxidant" was new to the public. Today it's big business, with sales of products making antioxidant-related claims reaching $65 billion in the U.S. in 2011.
Health Sep 25, 2012 | not rated yet | 1 |
The next time you call someone a drunken pig, remember this study. Rhode Island Hospital researcher Frank Sellke, M.D., chief of cardiothoracic surgery at Rhode Island and The Miriam hospitals, and his colleagues ...
Cardiology Sep 10, 2012 | 5 / 5 (1) | 1
(HealthDay) -- Instead of reaching for a commercial medicine when your child is coughing through the night because of a common cold, Israeli researchers suggest giving honey a try.
Pediatrics Aug 06, 2012 | 4.5 / 5 (2) | 0 |
A new and powerful class of antioxidants could one day be a potent treatment for Parkinson's disease, researchers report.
Parkinson's & Movement disorders Jul 23, 2012 | 5 / 5 (1) | 0 |
Why do we age, and what makes some of us live longer than others? For decades, researchers have been trying to answer these questions by elucidating the molecular causes of aging.
Medical research Jul 19, 2012 | 5 / 5 (2) | 0 |
Researchers at Albert Einstein College of Medicine of Yeshiva University have uncovered one of the mechanisms by which aging may compromise the ability of the immune system to fight infections and respond to vaccines. The ...
Medical research Jul 17, 2012 | 4.5 / 5 (2) | 0 |
A specific antioxidant supplement may be an effective therapy for some features of autism, according to a pilot trial from the Stanford University School of Medicine and Lucile Packard Children's Hospital that involved 31 ...
Psychology & Psychiatry May 29, 2012 | 5 / 5 (4) | 0 |
An antioxidant is a molecule capable of slowing or preventing the oxidation of other molecules. Oxidation is a chemical reaction that transfers electrons from a substance to an oxidizing agent. Oxidation reactions can produce free radicals, which start chain reactions that damage cells. Antioxidants terminate these chain reactions by removing free radical intermediates, and inhibit other oxidation reactions by being oxidized themselves. As a result, antioxidants are often reducing agents such as thiols, ascorbic acid or polyphenols.
Although oxidation reactions are crucial for life, they can also be damaging; hence, plants and animals maintain complex systems of multiple types of antioxidants, such as glutathione, vitamin C, and vitamin E as well as enzymes such as catalase, superoxide dismutase and various peroxidases. Low levels of antioxidants, or inhibition of the antioxidant enzymes, causes oxidative stress and may damage or kill cells.
As oxidative stress might be an important part of many human diseases, the use of antioxidants in pharmacology is intensively studied, particularly as treatments for stroke and neurodegenerative diseases. However, it is unknown whether oxidative stress is the cause or the consequence of disease. Antioxidants are also widely used as ingredients in dietary supplements in the hope of maintaining health and preventing diseases such as cancer and coronary heart disease. Although initial studies suggested that antioxidant supplements might promote health, later large clinical trials did not detect any benefit and suggested instead that excess supplementation may be harmful. In addition to these uses of natural antioxidants in medicine, these compounds have many industrial uses, such as preservatives in food and cosmetics and preventing the degradation of rubber and gasoline.
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