News tagged with antioxidants
(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 |
One of life's simple pleasures just got a little sweeter. After years of waffling research on coffee and health, even some fear that java might raise the risk of heart disease, a big study finds the opposite: ...
Health May 17, 2012 | 4.9 / 5 (7) | 4
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 |
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 |
(Medical Xpress) -- Researchers at NIH’s National Human Genome Research Institute have identified 22 antioxidants out of more than 4000 compounds it has been studying, that are able to cause DNA damage and cell death, ...
Medical research Mar 20, 2012 | 4.8 / 5 (6) | 1 |
In an experiment on rats, European researchers have proved that eating strawberries reduces the harm that alcohol can cause to the stomach mucous membrane. Published in the open access journal Plos One, the st ...
Other Oct 25, 2011 | 4.4 / 5 (21) | 2
Researchers in the Faculty of Medicine & Dentistry at the University of Alberta have discovered that resveratrol, a powerful antioxidant found in common foods, prevents a syndrome in some offspring that could lead to later ...
Medical research Sep 02, 2011 | 4.6 / 5 (14) | 6 |
(Medical Xpress)—A winter after discovering Canada for France, Jacques Cartier's exploration crew started suffering and dying from the dreadful scurvy disease in 1535. But thanks to an Iroquoian healer, they were miraculously ...
Ophthalmology Apr 25, 2013 | 5 / 5 (2) | 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 |
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 |
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 |
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 the early 1990s, MIT professor Leonard Guarente discovered that sirtuins, a class of proteins found in nearly all animals, protect against the effects of aging in yeast; similar effects have since been ...
Medical research Mar 07, 2013 | 4.7 / 5 (6) | 2
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 |
(Medical Xpress) -- Blueberry wine can provide more potentially healthy compounds than white wines and many red wines, according to a new University of Florida study.
Health Feb 02, 2012 | 4.5 / 5 (2) | 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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