Free radicals are unstable molecules with extra "free"
electrons looking for a connection. They can latch onto a cell
membrane or blood vessel lining and create constant
inflammation, leading to eventual damage, serious disease,
and even to an early death.

Free radicals are atoms or groups of atoms that contain at
least one unpaired electron that attack healthy cells. If an
electron is unpaired, another atom or molecule can easily
bond to it, causing a chemical reaction.

Damage caused by the "stress" of excessive numbers of
free radicals in the body accumulates with age. Many
scientists are convinced that early aging and chronic health
problems (cancer, heart disease, thrombosis, cataracts,
rheumatoid arthritis, Alzheimer's disease, etc.) are initiated
by free radical damage. They then take years to develop.

Free radicals in the body have been proven to:

Damage cholesterol-carrying particles,
May increase the risk of atherosclerosis.
Contribute to the formation of blood clots,
May increase the risk of a heart attack or stroke,
Damage a cell's genetic material (DNA),
May lead to cancer,
Trigger inflammation,
Suppress the immune system,
Impair cell function,
Start, and extend, the aging process.

Other types of tissue breakdown attributed to free radicals
can lead to inflammatory disease, allergies, chronic fatigue
syndrome, fibromyalgia, chronic nerve pain, neuropathy,
colds, and other chronic illnesses.  These now common
diseases and virtually all cancers can be traced to free
radicals.

Common sources of excess free radicals in the human body
today are cigarette smoke, air pollution, pesticides,
herbicides, overexposure to the sun, automobile exhaust,
radiation, smog, stress, rancid foods, food contaminants,
and a myriad of other factors that are part of our modem
life.

Using antioxidants is one of the best ways to help protect
your body against dangerous free radicals in the body,
which can lead to health problems and disease.

Antioxidants are nutrients which donate extra hydrogen
electrons to free radicals, thus neutralizing them and
producing stable molecules.

Antioxidant molecules are able to give up extra electrons
without turning into free radicals themselves, thus halting
this harmful process.

The body is a "closed system".  Its well-being depends
solely on what is eaten.  If you don't feed it what it needs
you will have health problems, and most health problems
start with free radicals.

Many advertisers today not only tell what the product is
(e.g. orange juice) or what it contains (vitamin C) but they
also stress that it provides antioxidants. 

Antioxidants fight free radicals the cause of many diseases;
vitamin C provides antioxidants as well as other important
elements needed by the body; vitamin C comes from the
orange juice.  As the song lyrics go, "You can't have one
without the other".

Drinking orange juice is certainly beneficial for health. 
However, it is only a part of the overall picture.  To truly
make an improvement in our health, nutritional
supplements that provide antioxidants, vitamins, minerals,
amino acids, enzymes, essential fatty acids, and fibers
should be added to our diets.

Article Source:  http://www.articlematrix.com