For Free radicals we have terms and definitions in 13 topics. The topics are Atmospheric Chemistry, Beauty, Cancer, Fitness, Food Irradiation, Food Safety, Health and Beauty, Huntingtons Disease, Multiple Sclerosis, Nutrition, Science, Spa and Vitamins.

Free Radicals (Atmospheric Chemistry)

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.]

Free Radicals (Beauty)

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.

Free Radicals (Cancer)

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

Free Radicals (Fitness)

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

Free Radicals (Food Irradiation)

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.

Free Radicals (Food Safety)

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.

Free Radicals (Health and Beauty)

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.

Free Radicals (Huntingtons Disease)

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

Free Radicals (Multiple Sclerosis)

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

Free Radicals (Nutrition)

An atom or group of atoms that is highly chemically reactive because it has at least on unpaired electron. Because they join so readily with other compounds, free radicals can attack cells and can cause a lot of damage in the body. It is a molecular fragment with a single unpaired electron which, wanting to be paired, steals electrons from other pairs. Free radical reactions occur normally in biological processes, but are normally handled by the body's reserve of antioxidants. Example of the destructiveness - Because they are highly reactive chemical fragments that can produce an irritation of artery walls which will start the arteriosclerotic process if no antioxidants are present. . See article Antioxidants.

Free Radicals (Science)

Highly reactive atoms that have one or more unpaired electrons

Free Radicals (Spa)

These are molecules which are formed from various pollutants, smoke, and sun exposure. They are unfortunately unavoidable in day-to-day life. Free radical molecules can cause significant damage to the skin. Antioxidants serve to diminish the effects of free radicals. Common antioxidants are Vitamin C, E, superoxide dismutase, and certain forms of Vitamin A. Antioxidants can be taken in orally with any form of fruit or vegetable, as well as in oral dietary supplements, and can be applied directly to your skin. Many antioxidant vitamins are a very important part of many skin care regimens

Free Radicals (Vitamins)

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)

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