Antioxidants Do Which Of The Following – Free radicals are produced in the body as by products of normal metabolism and as a result of exposure to radiation and some environmental pollutants. Free radicals are atoms or groups of atoms with an odd (unpaired) number of electrons and can be formed when oxygen interacts with certain molecules. Because they are highly reactive, they can damage cellular components and are implicated in a variety of diseases.
The antioxidant enzymes (superoxide dismutase, catalase, and glutathione peroxidase) and the nutrient-derived antioxidant small molecules (vitamin E, vitamin C, carotenes, flavonoids, glutathione, uric acid, and taurine) are molecules which can safely interact with free radicals and terminate the chain reaction before vital molecules are damaged.
The health benefits of antioxidants aren’t as clear-cut as they sound. You’ve possible heard that blueberries are full of antioxidants that could protect towards heart sickness. but what does that truely mean? it’s true that one cup of blueberries consists of greater than 800 milligrams of polyphenols (antioxidants located in flowers). but no one knows exactly how lots of that quantity our bodies take in. No massive-scale medical trial has shown that people who devour blueberries are less probable to expand or die from any continual ailment. (it’s noticeably difficult to isolate reason and impact for one meals with accuracy.) alternatively, claims are typically pulled from smaller research, like a current blood pressure trial that discovered that consuming the equivalent of 1 cup of blueberries an afternoon for eight weeks decreased BP by way of about 5 percent in postmenopausal girls with prehypertension or high blood pressure. From information like this, people will then extrapolate that blueberries is probably exact for the coronary heart.
Although there is little doubt that antioxidants are a necessary component for good health, no one knows if supplements should be taken and, if so, how much. Antioxidants supplements were once thought to be harmless but increasingly we are becoming aware of interactions and potential toxicity. It is interesting to note that, in the normal concentrations found in the body, vitamin C and beta-carotene are antioxidants; but at higher concentrations they are pro-oxidants and, thus, harmful. Also, very little is known about the long term consequences of megadoses of antioxidants. The body’s finely tuned mechanisms are carefully balanced to withstand a variety of insults. Taking chemicals without a complete understanding of all of their effects may disrupt this balance.