Most people have heard of antioxidants and free radicals, but many are unclear as to what they actually are. Free radicals are atoms which contain an odd number of electrons. They tend to form with the action of oxygen on certain molecules, and in an attempt to obtain another electron in order to stabilize themselves, they will attack nearby molecules, causing damage. They can cause damage to cell membranes, or important cellular components such as DNA, which then causes the damaged cell to mutate. This sets off a chain reaction of damage throughout the cells of the body.
Free radicals are formed due to either normal metabolic process of the human body from reactions to inflammation, excessive exercise or allergic reactions, or from external sources such as cigarette smoke, exposure to X-rays, pollutants, ozone or pesticides. A poor diet and high alcohol intake can also trigger production of free radicals.
The damage caused by free radicals is thought to initiate tumors and cause health conditions such as heart disease, Alzheimerís disease and Parkinsonís disease. Free radicals are also thought to accelerate the aging process.
The body has mechanisms in place to counteract damage cause by free radicals. One of these is the presence of antioxidants in the body. Antioxidants are molecules which interact with free radicals and stop them causing cellular damage, thus limiting their harmful effects. Some of the main antioxidants include the vitamins C and E, beta-carotene and selenium. These must be supplied through diet as the body is unable to manufacture them.
Vitamin E is a fat soluble vitamin which is found in whole grains, fortified cereals, nuts, seeds, apricots and vegetable and fish oils. Vitamin C is a water soluble vitamin found in citrus fruits, strawberries, kiwi fruit and leafy green vegetables such as cabbage, spinach and broccoli.
Beta-carotene is obtained from egg yolk, liver, grains and yellow-orange vegetables such as carrots, peaches, squash and sweet potatoes. Selenium is found in nuts, particularly brazil nuts and walnuts, fortified cereals and soy beans. There are also many other antioxidants, which can be found in a wide variety of foods.
Ideally, our bodies need a good variety of vitamins and minerals to combat damage caused by free radicals. This is best achieved by eating a wide range of foods to ensure that we have a good intake of different antioxidants. Our modern diets tend to rely heavily on processed foods which contain few nutrients, so conscious effort is required to ensure we receive an adequate nutritional intake so that our bodies can win the constant battle between antioxidants and free radicals.
We can use vitamin supplements as an antioxidant boost if we are deficient, but they should not be used in the place of a healthy, varied, balanced diet. Also bear in mind that some vitamins can be harmful if taken in excess.
Psoriasis is a skin condition often referred to as a skin disease, which is believed to have no cure. Modern medicine treats the symptoms of the disease with a variety of prescription medications which can help ease those symptoms. Natural remedies exist however, so we’ll look at those in this article.
Remember high school? With the bell ringing every 40 minutes, you were constantly reminded how fast the end of the day was approaching, and whether your task was completed or not you moved on to the next class.
Heart disease is a generic term which is applied to a wide variety of health conditions and problems that affect the heart. As the name implies, these conditions and problems are generally related to the heart or its connected systems that the heart relies on.
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