What do antioxidents do for the body?
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Oxygen radicals (free oxygen) that are present in the body because of various factors is harmful and has been believed to cause different illnesses including cancer...To counter its harmful effects or to attract such radicals out of the body, food (fruits and vegetables, etc.) containing antioxidants are encouraged to be taken.
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Oxidants (oxidative stress) can cause lipid peroxidation.  Oxidative stress is a natural byproduct of the use of oxygen by biological systems.  It is also caused by various biological processes such as inflammation, immune reactions, and detoxification processes.  Unsaturated fattys acids (especially in cell membranes) are very susceptible to damage by oxidative stress.  This damage results in lipid peroxidation (literally - 'fat oxidation').  Antioxidants (especially vitamin E) work to prevent excessive levels of oxidative stress in cell membranes and therefore, help prevent lipid peroxidation. Lipid peroxides can lead to damage to DNA.  DNA damage can contribute to the risk of developing various cancers.
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Vitamins that are antioxidants include:\n\nVitamin C\nVitamin E\nBeta Carotene (a form of Vitamin A).\n\nA couple of antioxidants that are frequently mentioned but are not vitamins are Green tea and Selenium (a mineral). \n\nA good way to ingest the necessary antioxidants is by both eating a sufficient amount of fresh fruits and vegetables that are loaded with many of the mentioned vitamin antioxidants and also take a multi vitamin supplement.\n\nIf you need any clarification, please contact me through "Answer" and I will change my response accordingly.
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Never use peroxide cause it is a cancer causing agent. It changes the molecules in your skin
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To combat free radicals\n-----------------\nIn biological systems, the normal processes of oxidation (plus a minor contribution from ionizing radiation) produce highly reactive free radicals. These can readily react with and damage other molecules. In some cases the body uses free radicals to destroy foreign or unwanted objects, such as in an infection. However, in the wrong place, the body's own cells may become damaged. Should the damage occur to DNA, the result could be cancer. Antioxidants decrease the damage done to cells by reducing oxidants before they can damage the cell.\n\nVirtually all studies of mammals have concluded that a restricted calorie diet extends the lifespan of mammals by as much as 100%. This remarkable finding suggests that food is actually more damaging than smoking. As food produces free radicals (oxidants) when metabolized, antioxidant-rich diets are thought to stave off the effects of aging significantly better than diets lacking in antioxidants. The reduced levels of free radicals, resulting from a reduction in their production by metabolism, is thought to be a major cause of the success of caloric restriction in increasing life span.\n\nFree radical damage in the mitochondria of living cells is a byproduct of oxidative phosphorylation. Superoxide radicals are generated, which can damage mitochodrial and mitochondrial membranes. Unlike DNA in the cell nucleus, mitochondrial DNA has only a few DNA-repair enzymes and the DNA is not protected by histones.\n\nMany antioxidants, however (including vitamin C and vitamin E) can't get into mitochondria for various reasons (e.g. because they are too hydrophilic to cross mitochondrial membranes or too hydrophobic to cross the cytoplasm). Melatonin is an important natural antioxidant that has been demonstrated [citation needed] to strongly protect mitochondria from damage. A group of scientists in Russia (led by V. Skulachev) have created a custom antioxidant (a Skulachev ion forms the point of the molecule and penetrates the mitochondrial membrane; the antioxidising part is attached behind it) that can enter the mitochondria and stays there due to the membrane potential gradient; preventing damage to DNA.\n\nAlthough there is little doubt that antioxidants are a necessary component for good health, there is considerable doubt as to the most beneficial antioxidant(s) and as to the optimal amount for results. A study of lung cancer patients found that those given antioxidant supplements had worse prognoses. This is believed to be due to antioxidant interference with the body's normal use of localised free radicals e.g. Nitric oxide for cell signalling. Due to the complex nature of the interactions of antioxidants with the body, it is difficult to interpret the results of many experiments designed to test such things. In vitro testing (outside the body) has shown many natural antioxidants, in specific concentration, can halt the growth of or even kill cancerous cells.\n\nFor example, recent studies are suggesting that at high levels, synthetic antioxidant vitamins such as A, E and C may prove to have pro-oxidant effects: increasing the formation of free radicals. The fact that natural antioxidants are always ingested together with a wide variety of flavonoids and other phytochemicals also likely plays a part. Many supplement manufacturers supply more expensive tablets containing these. Newer liquid nutritional supplements using plant ionic compounds are believed to be more readily absorbed in the human body.\n\nThe benefits of antioxidants were examined during the Age-Related Eye Disease Study.\n\nNutritional antioxidants\nThe following substances have shown positive antioxidant effects:\n\nVitamin A (Retinol, also synthesized by the body from beta-carotene) protects dark green, yellow and orange vegetables and fruits from solar radiation damage, and is thought to play a similar role in the human body. Carrots, squash, broccoli, sweet potatoes, tom
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Vitamin E, one of the antioxidants, can be taken regularly as part of a daily vitamin and mineral supplement or spread as in an ointment on sunburn. Vitamin C is another antioxidant that will help prevent severe damage from sunburn and shorten its effects. Selenium is a mineral that will help fight sunburn.
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Yup, oxygen oxidises our bodies. As we are carbon based lifeform, we lose carbon when we breathe out - hence, carbon dioxide.
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YES it is, green tea has a potent antioxident that has been linked to cancer prevention, lowering cholesterol and even cavity prevention.
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ANTIOXIDANT YES! ANTIMICROBIAL NO!\n\nYOU NEED YOUR GERMS THEY HELP YOU LIVE!
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Blood's role in the body is three fold: First, it acts as a transort system for nurtients and such to reach the different parts of the body. Secondly as a defence system, where lymphocytes are active in controlling pathogens that enter the body (such as bacteria, viruses, fungi, etc). Lastly, the blood acts as a sealant. When there is damage to the body, the platelets in the blood seal up the wound.\n\nBlood is very important to the body. Without it, you wouldn't exist.
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Vitamin C is essential for healthy teeth, gums and bones. It helps heal wounds and scar tissue, Fractures; prevents scurvy; builds resistance to infection; aids in the prevention treatment of the common cold; gives strength to blood vessels; aids in the absorption of iron. It is required for the synthesis of collagen, the intercellular cement which holds tissues together. It is also one of the major antioxidant nutrients.\nFor more information about treatment and products go at:
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Blood supplies oxygen to all the parts of the body, thus enabling all the organs and systems to continue to function. Without blood and the movement of it through your body, your body would shut down due to oxygen deprivation. The respiratory system provides the oxygen via breathing and then sends it everywhere via the cardio(heart) vascular(veins and arteries) system. Blood supplies the nutrients we eat via the digestive systems and removes all the wastes. The human body is an amazing invention if you really think about it and blood is the biggest part of the body and even counts as a body in homicide cases where the actual body can't be found. Good luck in your classes.
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Antioxidants don't work on normal oxygen atoms, but rather on oxygen radicals.  Radicals are ionized forms of atoms or molecules that have surprisingly destructive properties and can actually cause cells to die.  Oxygen as a normal bivalent molecule (it usually floats around in pairs such as O2) has enough of its electron shells filled that it has an overall charge of zero, thereby minimizing the potential for oxidation.
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VITAMIN E: this anti-oxidant has other uses in the treatment of scars, and has been employed in the treatment of Peyronie’s disease since 1945.\n\nTake a 400 IU of Natural Vitamin E softgel daily. I prefer, whats known as, mixed tocopherols verses just d-alpha. Vitamin is so important to take for many other reasons to. Cheap. About 7-9 cents per day. Anywhere vitamins are sold but be sure is says natural vitamin E. Synthetic vitamin E is all some places sell and is much less effective.
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BHA is an antioxidant. Oxygen reacts preferentially with BHA rather than oxidizing fats or oils, thereby protecting them from spoilage.
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Antioxidants are best known for their action as a radical oxygen species scavenger.  Radical oygen species can deteriorate the membranes of cells in the body, and people suspect that part of the aging process is due to an accumulation of radical oxygen species over time.
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It has strong oxidizing properties and is therefore a powerful bleaching agent that has found use as a disinfectant and as an oxidizer.\n\nOxidising agents act by oxidising the cell membrane of microorganisms, which results in a loss of structure and leads to cell lysis and death.\n\n* Hydrogen peroxide is used in hospitals to disinfect surfaces. It is sometimes mixed with colloidal silver. It is often preferred because it causes far fewer allergic reactions than alternative disinfectants. Also used in the food packaging industry to disinfect foil containers. A 3% solution is also used as an antiseptic. When hydrogen peroxide comes into contact with the catalase enzyme in cells it is broken down into water and a hydroxyl free radical. It is the damage caused by the oxygen free radical that kills bacteria. However, as recent studies have show hydrogen peroxide to be toxic to growing cells as well as bacteria, its use as an antiseptic is no longer recommended.