DOC WHAT ARE ANTIOXIDANTS
Antioxidants are substances that may protect the cells in the body against the effects of free radicals.
Free radicals are molecules produced by:
1. Oxidation—one of the body's natural chemical processes—can produce free radicals which are highly unstable molecules that can damage cells.
Free radicals are produced when the body breaks down foods like carbohydrates, proteins and fats for use as glucose, amino acids or fatty acids or storage in the body
2.environmental exposures like tobacco smoke, radiation, and environmental contaminants can produce free radicals from chemical reactions in the environment .
These free radicals can start chain reactions which can occur in a cell resulting in damage or death to the cell.
Free radicals can damage the cells in the body and therefore may play a role in Alzheimer's disease, cancer, eye disease, heart disease, Parkinson's disease, and rheumatoid arthritis.
Antioxidants are found in many foods.
1.fruits and vegetables, nuts, grains
2. meats, poultry and fish.
Antioxidants are substances that may protect the cells of the body from potentially disease-producing cell damage that can result from natural bodily processes and from exposure to certain chemicals.
The body can produce its own antioxidants and also obtain them from food.
Antioxidants are abundant in vegetables and fruits and are also found in grain cereals, teas, legumes, and nuts.
Antioxidant substances include anthocyanins, beta-carotene, catechins, coenzyme Q10, flavonoids, lipoic acid, lutein, lycopene, selenium, and vitamins C and E
People take antioxidant supplements in an effort to improve their health and to prevent various diseases
Systematic reviews of the research literature have concluded that there is not enough evidence to support the use of antioxidant supplements for preventing cancer, cardiovascular disease, and eye disease, and reducing overall mortality in healthy people and people with various diseases
One exception is the combination of antioxidants and zinc reduced the risk of developing advanced stages of age-related macular degeneration (AMD) by 25 percent in people who had intermediate AMD or advanced AMD in only one eye. Antioxidant supplements used alone reduced the risk by about 17 percent.
Safety of Antioxidants
Antioxidants in foods are generally considered safe.
However beta-carotene supplements have been found to increase the risk of lung cancer in smokers.
vitamin E supplements may increase the risk of bleeding in certain people.
Use of Antioxidants
Do not use antioxidant supplements:
1.as a replacement for a healthful diet
2.as conventional medical care,
3.to postpone seeing a doctor about a medical problem.
Antioxidants are substances that may protect the cells in the body against the effects of free radicals.
Free radicals are molecules produced by:
1. Oxidation—one of the body's natural chemical processes—can produce free radicals which are highly unstable molecules that can damage cells.
Free radicals are produced when the body breaks down foods like carbohydrates, proteins and fats for use as glucose, amino acids or fatty acids or storage in the body
2.environmental exposures like tobacco smoke, radiation, and environmental contaminants can produce free radicals from chemical reactions in the environment .
These free radicals can start chain reactions which can occur in a cell resulting in damage or death to the cell.
Free radicals can damage the cells in the body and therefore may play a role in Alzheimer's disease, cancer, eye disease, heart disease, Parkinson's disease, and rheumatoid arthritis.
Antioxidants are found in many foods.
1.fruits and vegetables, nuts, grains
2. meats, poultry and fish.
Antioxidants are substances that may protect the cells of the body from potentially disease-producing cell damage that can result from natural bodily processes and from exposure to certain chemicals.
The body can produce its own antioxidants and also obtain them from food.
Antioxidants are abundant in vegetables and fruits and are also found in grain cereals, teas, legumes, and nuts.
Antioxidant substances include anthocyanins, beta-carotene, catechins, coenzyme Q10, flavonoids, lipoic acid, lutein, lycopene, selenium, and vitamins C and E
People take antioxidant supplements in an effort to improve their health and to prevent various diseases
Systematic reviews of the research literature have concluded that there is not enough evidence to support the use of antioxidant supplements for preventing cancer, cardiovascular disease, and eye disease, and reducing overall mortality in healthy people and people with various diseases
One exception is the combination of antioxidants and zinc reduced the risk of developing advanced stages of age-related macular degeneration (AMD) by 25 percent in people who had intermediate AMD or advanced AMD in only one eye. Antioxidant supplements used alone reduced the risk by about 17 percent.
Safety of Antioxidants
Antioxidants in foods are generally considered safe.
However beta-carotene supplements have been found to increase the risk of lung cancer in smokers.
vitamin E supplements may increase the risk of bleeding in certain people.
Use of Antioxidants
Do not use antioxidant supplements:
1.as a replacement for a healthful diet
2.as conventional medical care,
3.to postpone seeing a doctor about a medical problem.
