Antioxidants are substances that are capable of counteracting the damaging, but normal, effects of the physiological process of oxidation in animal tissue. Antioxidants are nutrients as well as enzymes (proteins in your body that assist in chemical reactions). They are believed to play a role in preventing the development of such chronic diseases as cancer, heart disease, stroke, Alzheimer’s disease, Rheumatoid arthritis, and cataracts.
Why the Elderly Must Take Antioxidants
Many researchers claim that elderly people, especially those who have reduced their food intake, frequent aspirin users, heavy drinkers, smokers, and people with impaired immune systems may benefit from taking antioxidant supplements daily.
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In terms of heart disease and stroke, it is possible that higher levels of antioxidants slow or prevent the development of arterial blockages, a complicated process involving the oxidation of cholesterol. Moreover, antioxidants may deter the collection of plaque on arterial walls.
Exercise and Free Radicals
Exercise in untrained individuals overwhelms defenses resulting in increased free radical damage. Thus, the “weekend warrior” who is predominantly sedentary during the week but engages in vigorous bouts of exercise during the weekend may be doing more harm than good. To this end there are many factors which may determine whether exercise induced free radical damage occurs, including degree of conditioning of the person, intensity of exercise, and diet.
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Because Free Radicals have one or more unpaired electrons, free radicals are highly unstable. They scavenge your body to grab or donate electrons, thereby damaging cells, proteins, and DNA (genetic material). The same oxidative process also causes oils to become rancid, peeled apples to turn brown, and iron to rust.
Sources of Antioxidants
Consuming more antioxidants helps provide the body with tools to neutralize harmful free radicals. It’s estimated that there are more than 4,000 compounds in foods that act as antioxidants. The most studied include vitamins C and E, betacarotene and the mineral selenium.
Why Go For Teeth Whitening?
People are generally vain in nature and so they continuously look for ways to improve their appearances as they grow old. While other people go for physical improvements like liposuction, nose lift and face lift, there are people who are more concerned with keeping their pearly whites whiter than ever.
As people grow older their teeth grow darker due to their lifestyle and personal circumstances. A persons teeth become darker through continuous exposure to staining drinks life coffee and colas and darkening substances like tar from cigarettes.
There are toothpastes that can whiten teeth and remove stains that have settled on the outer layer of the teeth but this will not solve real stains of the teeth. This is the reason why people resort to having their teeth bleached.
A tooth is bleached through the application of a gel containing carbamide peroxide. While this substance enters the teeth enamel and makes it lighter, it will not have the same effect on fillings or tooth crowns.
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Teeth bleaching can be expensive and some dentists charge a minimum of $400 for the treatment. However, most people who have undergone teeth bleaching find it worth their while and their dollars. However, there are teeth bleaching substances which are directly sold through the internet. Buying these products is generally cheaper than going to the dentist since you are no longer charged the dentist fee and other overhead, just the price of the teeth whitening.
There is a tooth whitening product that comes in plastic strips and is applied by just placing the strips on the tooth area. Other teeth whitening products require the use of a tray to keep the gel fastened on the teeth while it is being bleached. Tooth whitening products for sale over the net comes with a detailed instruction book.
Aside from being expensive, whitening ones teeth is not a one-time thing because it is not guaranteed to last long. People who continue with a lifestyle filled with staining agents like coffee, cigarette and wine will definitely need to whiten their teeth after a certain period.
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Teeth whitening agents are generally safe but some causes the teeth to be more sensitive to changes in temperature. Almost everyone who undergoes teeth whitening will notice the difference and improvement in their pearly whites, the degree of whitening however depends on the amount of time the gel is placed on their teeth. Home-based whitening usually requires a minimum of two hours but if you require a whitening degree that is several shades lighter than your tooth color, then the dentist may require you to keep them overnight.
While teeth whitening can cause some discomfort, the effects can boost a persons market value. After teeth whitening, you now have a more brilliant smile which can make you more attractive and younger looking.