free-floating electrons resulting from oxidation that hve been linked to the aging process, cancer, and autoimmune diseases

During the oxidation process, cells become unstable, leading to the presence of free radicals, causing great cellular damage; use of antioxidants, like beta-carotene, helps fight free radicals.

A highly reactive molecule that can damage cells and lead to cancer or other diseases.

highly reactive oxygen molecules which can irritate artery walls and damage cells and tissues; these electrically charged molecules are unstable, and are often caused by environmental factors like smoking, fatty diets, sunlight, pesticides, and carbon monoxide. Antioxidants trap and destroy these molecules, preventing the damage before it occurs.

Highly reactive atoms or groups of atoms with a spare, unpaired electron. Free radicals cause damage to human cells, but their activity can be neutralised by antioxidants.

See Free Radical.

Unstable molecules that transport oxygen. Can be destructive causing a loss of integrity of the membranes.

Unstable molecular fragments that can damage cells. One hypothesis holds that free radical formation in the substantia nigra causes the loss of nigral cells (leading to Parkinson's disease).

Chemical compounds formed by the oxidation of polyunsaturated fats. They are highly reactive and have the potential to damage DNA, causing mutations that can initiate malignant transformation of cells. Free radicals can easily cause harm to the immune system. (Weil, 1995a, p. 185)

A highly reactive atom or compound having an unpaired electron. Freeradicals are produced during metabolism and are believed to cause cellular damage. Free radicals mayplay a role in aging and disease. Antioxidants are consumed to help neutralize free radicals bysacrificing themselves to react with the free radicals so that the free radicals do not react with thebody's cells.

Unstable molecules found naturally in the body and in the environment. To reduce their energy load, free radicals react with certain chemicals in the body, and in the process, interfere with the cells' ability to function normally. Free radicals are a main cause of extrinsic aging.

Highly reactive atoms or molecules with incomplete (electronic) octets and therefore uneven numbers of electrons. (In the case of hydrogen radical this is an incomplete duet.) Free radicals species are very electrophilic, will abstract atoms from other molecules to complete their octets, and will, in the process, generate new radicals. In the atmosphere, most free radical species have short life times; however, they can promote the conversion of oxygen to ozone and also take part in the catalytic cycle of ozone destruction (see chlorine and chlorine monoxide). [Organic Chemistry; Wade, L. G.; Prentice-Hall, New Jersey; page 125; 1991.] [Atmospheric Change; Graedel, T. E. ; W. H. Freeman and Company; New York; page 141; 1993.

Highly reactive or unstable molecules and atoms that cause aging and degenerative diseases. These free radicals often result from ozone, cigarette smoke, herbicides and pesticides, solvents, petrochemicals, drugs, sunshine, X-rays and other foreign body substances.

During the natural metabolic function, many chemical compounds are formed. Among these chemicals are a group referred to as "free radicals", which are harmful substances. They can do a lot of harm. We now know that most of the major diseases that kill or ruin the quality of life do their damage by means of free radicals. They are constantly attacking body proteins, carbohydrates, fats and DNA, causing potentially serious damage unless checked. (See Anti-Oxidants)

Highly reactive molecular byproducts of energy metabolism that can damage cells and DNA. Free radicals also come from environmental sources such as cigarette smoke, auto and industrial emissions and sunlight. A leading theory of aging holds that free radicals are largely responsible for the declines and diseases associated with aging.

atoms with single missing electrons, which cause cellular damage by taking electrons from molecules in healthy cells. This process is called oxidation.

A molecule with an odd number of electrons which contain an open or half bond and are highly reactive. Free radicals are through to plan an important role at certain stages in the progression of injury as in myocardial infarction (heart attack).

Unstable molecules, usually containing oxygen, created by normal chemical processes in the body as well as by radiation and other environmental influences. The interaction of free radicals with DNA and other molecules leads to impaired functioning of the cells.

Free radicals are highly reactive molecules in the body which can destroy tissues by oxidizing cell membrane lipids and damaging DNA, the body's genetic material. Free redicals are produced through the body's normal process of metabolizing the air we breath and the food we eat, as well as exposure to tabacco smoke, excess sunlight and environmental pollutants. Antioxidants work in the body by neutralizing free radicals before the can do significant harm.

A free radical is a molecule with an odd number of electrons. Free radicals do not have a completed octet and often undergo vigorous redox reactions. Free radicals produced within cells can react with membranes, enzymes, and genetic material, damaging or even killing the cell. Free radicals have been implicated in a number of degenerative conditions, from natural aging to Alzheimer's disease.

Short-lived form of compounds that exist with an unpaired electron. Free radicals may be detrimental to health by causing destruction to DNA and cell membranes.

molecules containing an odd number of electrons resulting in an open bond or half bond, making them highly reactive and as a result, potentially destructive.

Unstable oxygen molecules, considered central factors in most health problems.

an instable molecule

molecules that have a missing or unpaired electron.

An atom or group of atoms that has at least one unpaired electron and is therefore unstable and highly reactive. In animal tissues, free radicals can damage cells and are believed to accelerate the progression of cancer, cardiovascular disease, and age-related diseases.

Highly activated and charged forms of molecules which interact rapidly with body tissues causing cancer and atherosclerosis.

Highly reactive molecular fragments that frequently contain oxygen. (See reactive oxygen species.)

Unstable molecules in our bodies which attack other unsuspecting molecules, setting up reactions that are damaging to other healthy cells in the body. Free radicals are created when oxygen molecules inside our bodies break down due to metabolism, radiation, exercise, ozone exposure, carcinogens and other environmental toxins.

Unstable oxygen molecules that cause damage to cells, DNA and other biological entities. Imbalance between antioxidants and free radicals causes "oxidative stress." Free radicals have been linked to cancer, aging, atherosclerosis, neurodegenerative diseases (Parkinson's & Alzheimer's).

free radicals produced by ultraviolet radiation are a source of pathological alterations. These highly reactive molecules intervene in many metabolic processes. Theories on free radicals hold these molecules responsible for aging, due to their interaction with other molecules. return to the top

Highly reactive molecules that are known to damage muscle fibers, inflammation, fatigue, and suppression of the immune system.

These attack the body and can hurt our cells and sometimes can make us ill. Free radicals are made when the body metabolises some foods, when we exercise and when people smoke. Antioxidants found in many fruit and vegetables gobble up these free radicals, so stop them attacking and damaging our cells in our body.

Highly reactive chemical species (part of a molecule) with an unpaired electron. The number of free radicals can sometimes be affected by magnetic fields.

unstable, toxic molecules with an unpaired electron that damages the cells in the body, especially DNA, protein and fats.

highly reactive molecules that are known to damage muscle fibers, inflamation, fatigue, and suppresion of the immune system.

are cellular killers which cause havoc by damaging DNA, altering biochemical compounds, corroding cell membranes, destroying enzymes and cells outright

Highly reactive and unstable oxygen molecules, generated in the body, that can damage cells, leading to heart disease, cancer, and other ailments. Antioxidants help minimize free-radical damage.

Highly reactive molecules, produced through normal metabolic processes that react with many other molecules and result in tissue damage.

highly reactive chemicals that attack molecules by modifying their chemical structures; molecular fragments that attack the nearest stable molecule, resulting in the disruption of the healthy living cell. Gastrointestinal

Chemically unstable atoms that can damage cells. Free radicals are toxic by-products produced when cells convert food to energy.

Unstable by-products of the chemical reactions taking place in the body. Damage can be caused to cell membranes, proteins and DNA by the free radicals attempting to stabilise. Antioxidants in healthy body tissues neutralise the effects of free radicals by ending the chain of events and preventing damage.

A chemical reactive molecule generated from the decomposition of unsaturated fatty acids.

Molecules produced from normal chemical functions in the body, but can have damaging effects on cells and tissues. See PDS information sheet Antioxidants (FS67) - 570kb pdf format.

Unstable atoms within cells that may be implicated in the development of Cancer. Gadolinium A chemical element that is used as a contrast medium for scanning techniques such as MRI. It enhances certain aspects of the image, to aid the radiologist.

Containing and unpaired electron and short half-lives, free radicals are extremely reactive compounds.

Free radicals or reactive oxygen species are any species capable of independent existence that contains one or more unpaired electrons. They are proven or suspected agents of tissue damage in a wide variety of circumstances including radiation, damage from environment chemicals and aging.

Waste products of oxygen metabolism that can damage cell components.

Free radicals are very unstable and react quickly with other compounds, trying to capture the needed electron to gain stability. Generally, free radicals attack the nearest stable molecule, "stealing" its electron. When the "attacked" molecule loses its electron, it becomes a free radical itself, beginning a chain reaction. Once the process is started, it can cascade, finally resulting in the disruption of a living cell. Some free radicals arise normally during metabolism. Sometimes the body's immune system's cells purposefully create them to neutralize viruses and bacteria. However, environmental factors such as pollution, radiation, cigarette smoke and herbicides can also spawn free radicals. Normally, the body can handle free radicals, but if antioxidants are unavailable, or if the free-radical production becomes excessive, damage can occur. Of particular importance is that free radical damage accumulates with age.

Highly reactive oxidation byproducts created by normal cell metabolism and environmental factors such as pollution. Free radicals lack electrons and try to steal them from other molecules, setting up a chain reaction that causes cellular damage. This damage is thought to be a fundamental cause of many degenerative diseases and the aging process. If free radicals attack the molecules involved in normal cellular reproduction, cells may become cancerous. Free radicals can damage the molecules responsible for moving cholesterol through the bloodstream, resulting in a build- up of plaque in arteries. Researchers believe that lycopenes help reduce free radicals.

Unstable molecules in the body that seek, attack, and damage neighboring molecules, making a continuing chain reaction of free radical formation and molecular damage. This chain reaction can lead to extensive damage of cell membranes, DNA, and tissue proteins.

Toxic substances produced by all cells.

Highly reactive molecules with an unpaired free electron that combines with any other molecule that accepts it. Free radicals are usually toxic oxygen molecules that damage cell membranes and fat molecules. To protect against possible damage from free radicals, the body has several defenses. The most important appears at present to be anti-oxidant substances, such as superoxide dismutase, selenium, vitamin C, vitamin E, zinc and others.

a special type of molecule. They can be destructive in the body. Pollution, radiation and other environmental factors can introduce more into the body. Free radicals are believed to be involved in conditions such as cancer, arthritis, high blood pressure and diabetes. Anti oxidants in the diet can provide some protection against the effects of free radicals.

Free radicals are defective oxygen atoms that occur when stable molecules gain or lose an unpaired electron. Once formed in this manner, free radicals can multiply in a chain reaction. This is evident when free radicals adhere to steel to make it rust or when they oxidize paint, causing it to fade. Sliced fruit will turn brown in minutes when free radicals in the air attack the cells. Free radicals are present everywhere but the worst sources are generally manufactured in our bodies. Excess amounts of these free radicals can also be damaging to every cell type in the body. They cause wrinkles, age spots, and most other signs and symptoms of aging in humans. Free radicals bind cholesterol and other saturated fats together, causing them to clog blood vessels. Although free radicals can be very useful to our immune system, as we age we tend to over-produce them which can cause serious chronic diseases such as arthritis and cancer. Thankfully antioxidants exist, since they attract free radicals and harmlessly flush them away.

Atoms or molecules with an unpaired electron. Formation of free radicals is a normal oxidation process in foods and are formed during food treatments such as toasting, frying, freeze drying, and irradiation. They are generally very reactive, unstable structures that continuously react with substances to form stable products. Free radicals disappear by reacting with each other in the presence of liquids, such as saliva in the mouth. Consequently, their ingestion does not create any toxicological or other harmful effects.

Very reactive atoms or molecules that can cause damage to our cells, impairing our immune system and leading to degenerative diseases.

Chemical compounds that are byproducts of metabolism which damage cells and leave them vulnerable to the effects of carcinogens.

Free radicals are abnormal molecules caused by environmental toxins and associated with the degenerative aging process. Free radicals attack fibroblast cells. Antioxidants help counter the effects of free radicals.

unstable, reactive molecules thought to attack cell structures, and reported to affect skin elasticity and firmness.

Molecules with unpaired electrons that react readily with other molecules. Oxygen-free radicals, produced during metabolism, damage cells and may be responsible for aging in tissues and organs. Heat Shock Proteins Produced when cells are exposed to stresses, heavy metals, and chemicals. Levels at which they are produced depend on age.

Highly unstable molecules, released by a spinal cord injury, which can quickly attack healthy cells. These molecules overwhelm the body's antioxidants, which normally neutralize them, creating a damaging condition known as oxidative stress.

Reactive species which usually have an unpaired, or free, electron.

Very excited molecules which cause many kinds of chemical reactions.

Highly reactive molecules with an unsatisfied electron valence pair. Free radicals are produced in both normal and pathological processes. They are proven or suspected agents of tissue damage in a wide variety of circumstances including radiation, damage from environment chemicals, and aging. Natural and pharmacological prevention of free radical damage is being actively investigated.

Atoms or groups of atoms that have an unpaired electron in their outer orbit, causing them to be unstable and highly reactive. Free radicals in the form of toxic metabolic by-products are thought to be a contributory cause of PD

Free radicals are molecules which have been implicated as one causative factor in the stimulation of abnormal cellular reproduction (cancer) and cellular destruction (aging)

Unstable, destructive oxygen atoms created by your body's natural processes and also by the effects of toxins such as cigarette smoke.

An unstable group of atoms that reacts with anything in the body that they come into contact with, and often cause damage to other cells (on a molecular level).

A single or group of unstable molecules/atoms that can cause damage to cells that can lead to breakdown and disease. Unstable oxygen molecules in your body are the “free radicals” that cause your unprotected organs to “rust” and breakdown.

are the unstable molecules that disrupt the structure of other molecules, resulting in damage within the eye.

Free radicals are highly reactive compounds that can be damaging to bodily components, such as cell membranes and fat molecules. Possibly the most important bodily defense against free radicals is the antioxidant.

Reactive substances created in the body during normal metabolism, but often triggered to extreme by ageing and stress, that seek other healthy molecules to damage or destroy. Controlled by Antioxidants in the body.

Formed when oxygen or a hydroxyl group is attached to a fatty acid, protein, sugar and cholesterol. Usually at a double bond. Changes the biochemistry activity of the substance to which it reacts with usually leading to harmful effects. Especially indicated in the formation of cancer and atherosclerosis

Highly reactive unstable atoms or molecules produced by the body as part of its immune system.

Highly reactive molecules possessing unpaired electrons that are produced during metabolism of food and energy. They contribute to the molecular damage and death of vital body cells. They can be a factor in aging or disease. Antioxidants help neutralize them.

Chemicals that are highly reactive and can oxidize other molecules (i.e. Superoxide).

Atomic or molecular species with unpaired electrons or an otherwise open shell configuration, usually very reactive. Specific to atmospheric chemistry, free radicals are: short-lived, highly reactive, intermediate species produced by dissociation of the source molecules by solar ultraviolet radiation or by reactions with other stratospheric constituents. Free radicals are the key to intermediate species in many important stratospheric chain reactions in which an ozone molecule is destroyed and the radical is regenerated. See ozone.

environmental molecules that break down skin cell structure that helps cause skin to appear to age

molecules in the body that have one or more unpaired electrons and are extremely reactive, tending to destabilize other molecules causing tissue damage. Some of the more destructive free radicals derive from oxygen.

Highly reactive molecules that possess unpaired electrons. Caused by a number of factors, look at Antioxidants for prevention.

Highly unstable and very aggressive atoms or molecules. They form primarily under the effect of ultraviolet photons, but are also caused by pollution, tobacco, etc. The targets they prefer are: - the cellular membrane, whence cells that are less well protected - cell proteins and enzymes, whence a change in the metabolism leading to an acceleraton in aging - the DNA, whence risks of cell mutation.

Unstable chemicals formed in the body, often as products of oxygen metabolism (oxidation). They can cause all sorts of damage to the cells of the body, leading to both vascular disease and cancer. They are mopped up by antioxidants. ormone - A chemical messenger; a substance that is formed in one part of the body and circulates in the blood to produce its effect in another part.

Unstable and highly reactive atoms that damage cell membranes and destroy DNA.

highly reactive chemicals that attack molecules and modify their chemical structure.

Naturally occurring chemicals that often contain oxygen and are produced when molecules are split to give products that have unpaired electrons - a process called oxidation. Free radicals can damage important cellular molecules such as DNA or lipids or other parts of the cell. In excess (over stimulated by pollutants such as radiation, UV light, car fumes, and cigarette smoke), they are thought to be one of the main culprits responsible for many diseases, including cancer and arthritis. Known to be a contributing factor in the aging process.

molecules or ions with unpaired electrons and hence generally extremely reactive. ['Stable' free radicals include molecular oxygen, NO, and NO2. Organic free radicals range from those of transient existence only to very long-lived species. Alkyl free radicals tend to be very reactive and short lived.

see oxygen free radicals.

Refers to unstable and highly reactive molecules, typically an oxygen-derived molecule that causes widespread damage in the body or can cause oxidation in foods. Antioxidants help neutralize free radicals.

A highly unstable group of atoms with unpaired electrons, which react with anything within the body that they come into contact with, very often doing damage to the others' cells or genes at the molecular level. They are constantly produced as a byproduct of human metabolism and may have their number increased by factors such as excess ultraviolet radiation, tobacco smoke from cigars and cigarettes, and air tainted with industrial pollution. They may also increase during stress. Free radicals can be neutralized, or their harmful activities limited by defending . (See Antioxidants)

Molecules containing oxygen that attack cells in the body.

Highly reactive oxygen molecules that have unpaired electrons in their outer shell. They are reactive and combine easily with other molecules causing damage to cells.

Highly unstable molecules produced through oxidation that attack and destroy cell membranes, cause damage to all types of substances and tissues in the body, and are thought to speed up the aging process. Antioxidants like AGR and Vitamins C and E prevent some of the damage caused by free radicals.

an atom or compound in which there is an unpaired electron. Thought to cause cellular damage.

an ionized atom with one or more unpaired electrons, resulting from electrons that have been energized by ionizing radiation being ejected from the atom; free radicals react violently with other molecules, such as DNA, causing damage by mutation (8).

Reactive toxic molecules damaging the cells of brain and other organs.

Free radicals are atoms or molecules in your body with an unpaired electron…making them highly unstable. Because electrons normally come in pairs, the free radicals collide with other molecules in an attempt to steal an electron, and may start a chain reaction, damaging your DNA and cells. Emerging science suggests this free radical damage may be linked to disease. Free radical scavengers, or antioxidants, bind with the free radicals before they can do their damage. This brings us back to POM Wonderful Pomegranate Juice. The polyphenol antioxidants in POM Wonderful have been shown through emerging science to function as potent free radical scavengers.

highly reactive molecular fragments, generally harmful to the body.

Highly reactive molecules capable of causing damage in brain and other tissue. Free radicals are common by-products of normal chemical reactions occurring in cells. The body has several mechanisms to deactivate free radicals.

unstable waste products from cellular metabolism that trigger chain reactive cellular damage

Short-lived, highly reactive molecules that have one or more unpaired electrons.

highly reactive, short-lived molecules which are thought to be involved in the process of carcinogenesis by reacting with cell constituents, particularly with DNA. Includes oxygen-containing molecules. Able to form Adducts.

Atoms or molecules that are highly reactive with other cellular structures because they contain unpaired electrons; free radicals can be very harmful to cells.

Unstable oxygen molecules that can damage cell membranes, proteins, and even DNA.

a molecule or atom that contains an unpaired electron, but is neither positively or negatively charged. They are usually highly reactive and unstable.

Atoms or or electrically neutral molecules that have one or more unpaired electrons in their outer orbital. Free radicals are unstable and react quickly with other atoms and molecules; because of this, they can cause damage to living tissues. find all NHC pages containing: free radicals

Since 1996, Free Radicals has been a jazz, funk, hip-hop, avant-garde, ska, reggae, African music, Indian music, punk, klezmer, polka and latin jazz group based in Houston, Texas. Free Radicals' live band includes six or seven members. On recordings (The Rising Tide Sinks All 1998, Our Lady of Eternal Sunny Delights 2000, and Aerial Bombardment 2004), Free Radicals invites a group of 50 or more musicians and vocalists into the studio.