Friday, January 11, 2013

Free radical our biggest enemy

Free radicals: the internal enemy, the cause of many diseases


Caused more than 150 illnesses, including cardiovascular disease, diabetes, various cancers, Alzheimer's and Parkinson's disease ...


Antioxidants, which has most of fresh fruits and vegetables, have the capacity to neutralize the damaging effects of free radicals

Free radicals are harmful products that arise spontaneously in the body or in the cells, due to the negative effects of the environment, air pollution or the diet, and for all that are responsible for the occurrence of many diseases.

Specifically, each cell consists of molecules, atoms and those of related chemical bonds. If, under certain circumstances, a break occurs in this connection leads to the formation of free radicals. On the other hand, antioxidants, which has the most of fresh fruits and vegetables, have the capacity to neutralize the damaging effects of free radicals, a longer and better quality of life and prevent aging.

On what are actually free radicals and how damaging to the body tells Dr. Ivica Jeremic Institue of Rheumatology.

- Free radicals are molecules that have one or more unpaired electrons, are able to take away electrons from other molecules and thus alter their structure and chemical properties. Biologically important molecules, such as proteins, nucleic acids and fats under the influence of free radicals being damaged, lose their function and adversely affect biochemical processes in the body.

As free radicals are formed?

- Spontaneous produced in the body, with most occurring during the process of energy production and cellular respiration, which is essential for our survival. In our cells are miniature fuel cells mitochondria, the energy necessary to produce, and they come to the combustion of different substrates in the presence of oxygen. This process normally occurs and incomplete reduction of oxygen, and the right of free oxygen radicals. Actually, one to five percent of the inhaled oxygen is converted to free radicals. They arise and activity of enzymes that perform detoxification of drugs and toxic substances in the liver, but also in response to infectious agents, immune system cells when the microorganisms are killed for their help and protect the body.

How does the body defend itself against free radicals?

- I do not bother evolution, creating antioxidants to protect against free radicals. Antioxidants are generally enzymes that inhibit the activity of free radicals, a variety of proteins that bind free metal ions which can increase the production of free radicals, as well as a variety of other molecules. But aside from free radicals, which normally occur in the body, and there are agents in the environment with the same effect. Ionizing radiation, excessive sun exposure, smoking, exposure to different toxins ... are just some of the factors that may contribute to the increased production of free radicals. The body, in fact, there is a constant struggle between free radicals and antioxidants. Today there is scientific evidence that free radicals are associated with more than 150 diseases. Each tissue damage leads to increased production of free radicals, but it is not always clear whether the disease existed prior to the increased amounts of free radicals that are caused pathological process, or the disease itself damaged tissue and caused their formation. But regardless of their creation, free radicals participate in further tissue damage and contribute to the maintenance of the pathological process. Free radicals and oxidative stress, experts associated with cardiovascular disease, diabetes, various types of cancer, aging, Alzheimer's and Parkinson's disease, but the list, unfortunately, is not final and is constantly added to.

Which diseases are particularly free radicals responsible?

- It is believed that atherosclerosis starts and just keep free radicals. This is particularly important given that the heart attack and stroke, as a result of atherosclerosis, today the most important cause of death in high-and middle-income countries. Free radicals are also able to directly damage the genetic material, or DNA, which can lead to the emergence of different mutations responsible for mutagenesis and carcinogenesis. It has been shown that the appearance of metastases of some tumors is associated with increased free radical production. However, the use of antioxidants as adjuvant therapy in the treatment of cancer patients, it can not be recommended because there is no evidence of their effectiveness.

What can we do in order to effectively cope with free radicals?

- Leading a healthy lifestyle is the main way to victory against the free radicals. And that means you need to be infused with antioxidants rich food or fruits and vegetables rich in vitamins C, E, beta-carotene and bioflavonoids. These foods reduce the risk of heart disease, diabetes and various cancers. On the other hand, the intake of vitamins C, E and beta-carotene supplements in mind, there is no protective effect on the occurrence of chronic diseases.


How many free radicals are responsible for the aging process?

- Aging as a phenomenon always intrigued people. It is believed that aging is actually a consequence of the accumulation of damage caused by free radicals. It is also considered that the decrease in metabolic activity may extend life expectancy. For, if the higher metabolic activity, increased mitochondrial activity and oxygen consumption, and thus larger and free-radical production. Reduced food intake, or caloric restriction, also help extend the life, postponing the onset of cancer and preserve brain function during aging. However, this does not mean that you should not enter the calories. Daily minimum to supply the body with essential nutrients, on average, about 1,400 calories.

ANTIKOSIDANSI
The richest sources of antioxidants are fruits and vegetables, because the plants produce about protection from free radicals. Vitamin C in abundance in citrus fruits, fresh red peppers, kiwi, but also in other fresh fruits and vegetables.
Because termolability vitamin C at high temperatures, it is advisable to eat fruits and vegetables fresh. Vitamin E has the most nuts, wheat germ, and various types of vegetable oils. It is important to enter the dark green vegetables, because in addition to beta-carotene contains lutein and zeaxanthin, which are important for the preservation of eyesight and preventing macular degeneration nursing.
As far as bioflavonoids, most of them are in various herbal teas, cocoa, dark chocolate. Since most of the green tea, but tea and chamomile, calendula and tea Shar.
However, an excessive intake of antioxidants can affect the normal functioning of another, or cause antioksidansnog imbalance. This can be dangerous because they are excessive amounts of toxic antioxidants.
In any case, the stock of antioxidants in the body sufficient to prevent the harmful effects of free radicals in small children and people under the age of twenty. However, after twenty years antioksidansnog protective efficacy of the system in the body decreases and the negative effects are more pronounced in the aging process.

PREVENTION
Every cell in our body during the attack on the millions of free radicals. There is a whole series of tests to determine the total antioxidant status, level of certain enzymes, selenium and other antioxidant components. Combining the results of these tests can determine where in the body has been a change in the body that is compromised. Checking antioksidanskog status is important because it can detect the disease while it is still not developed, and is important for the sufferer to monitor changes in the state of disease, and the effects of therapy.
However, determining the status antioksidansnog specifically advises healthy people who are exposed to increased mental and physical stress. Particularly vulnerable are people who suffer from chronic stress, convalescents after application of certain therapeutic procedures, as well as smokers. Recommendations of experts is that these kinds of tests done once or twice a year to prevent disease. If it is determined that there is some discrepancy needs urgent change in lifestyle and diet regime, and more rest for restoring the balance and normal functioning of the organism antioksidansnog protective system.

B12 and iron
Lack of certain essential nutrients for the brain, it can lead to a weakening of its functions. In a series of necessary important place belongs to vitamin B12 and iron, key keepers of brain activity. Because the diet is rich in these antioxidants is essential, and most of them are in the spinach, strawberries, blueberries ... Research devoted to the older population, which is increasingly ill with Alzheimer's disease, characterized by rapid forgetting, and changes in personal behavior of the patient, have shown that just by entering these foods may preserve brain function. Because people ill because brain cells, the brain ages, becoming more sensitive to oxidative stress caused by free radicals. Only cellular antioxidant defense balances the composition of these dangerous molecules, and he, unfortunately, aging weakens.

Source: Evening News



Cooked tomatoes are healthier than fresh


Daily consumption of tomatoes, scientists suggest, reduces the risk of cancer, osteoporosis, and many cardiovascular diseases.


Experts explain that cooked tomatoes are more effective and healthier than fresh.
U.S. researchers found that tomatoes are the biggest source of antioxidants and lycopene, and unlike other fruits and vegetables lose their vitamins and minerals, has a higher value after it has been heat-treated.

The Illinois researchers say that nutrients from tomatoes contain safeguards that prevent inflammation and blood clots.


The most powerful antioxidants are vitamins E, C, A, beta carotene, as well as some trace elements such as selenium and zinc. Foods that contain these elements play an important role in reducing oxidative stress and preventing a number of diseases associated with harmful actions of free radicals.


Many diseases of modern man are actually caused by harmful effects of free radicals in the body, and their enhanced formation was observed during stress, extensive meal, inflammatory diseases, diabetes, showed a number of studies in the last decade, says "Flash".

In order to prevent or mitigate their adverse impact, are essential to us which has the most antioxidants in fruits and vegetables. Free radicals have in tobacco smoke, car exhaust fumes, UV rays. They arise in the very foods during their preparation or during long-term storage of food. The body produces a chemical reaction with the cells, damaging them and initiate the occurrence of cancer, damage to blood vessels, inflammation, aging.

"Oxidative stress is a condition that occurs when the production of free radicals overwhelms the ability of the body to eliminate them. Could arise either due to the abundance of free radicals or a reduction in the presence of antioxidants. Fortunately, our body has powerful mechanisms to fight against free radicals," says " Flash "prof. Branko Jakovljevic, nutrition specialist with the Medical Faculty in Belgrade.

The most powerful antioxidants are vitamins E, C, A, beta carotene, as well as some trace elements such as selenium and zinc. Foods that contain these elements play an important role in reducing oxidative stress and preventing a number of diseases associated with harmful actions of free radicals.

According to Dr. Jakovljevic, there is a very reliable method - ORAC (Oxygen Radical Absorbance Capacity), which measures the antioxidant power of action of each food. The foods richest in antioxidants include dark chocolate (13 120 ORAC units per 100 grams), red bean (11 125),
Plum (6100), garlic (5708), red wine (3115), blueberries (2,400), raspberries (1,220), apples (1,207) ...

"Foods with the strongest potential was antioksidtivnim acerola, a fruit like cherry, which grows in the West Indies, Central and South America. Due to the extremely high content of vitamin C, as well as numerous bioflavonoids, minerals and trace elements, the acerola ORAC scale is two times higher index of raw cocoa, which is second on the list, "said Dr. Jakovljevic.

Numerous studies have shown that people who have higher levels of antioxidant substances in the body significantly reduces the likelihood of developing diseases associated with all the action of free radicals. That's why I advise a diet rich in fruits and vegetables because they are antioxidants in abundance. Furthermore, it is recommended to use vitamin supplements that are also important for potent antioxidant defense of the body, but it should be noted that supplements can not replace a healthy diet, but only by amending it.

(MONDO)




Oxygen has a dual function in the body, in fact it is essential for life but is also a source of potentially harmful link - free radicals. That the oxygen potential enemies the man's less known, but no less true fact. The source of the oxygen free radicals - potentially harmful visokoreaktivnih compounds in the body occur as meduprodukti normal metabolic processes. Free radicals may also occur as a result of some external factors: air pollution iizduvnim automotive and industrial gases, radiation, excessive sun exposure, the presence of various toxins in the environment or as a result of poor man's relationship to the body: smoking, excessive intake of processed foods and foods rich in saturated fat and stress. Modern research shows necessarily that oxidative stress is a major cause of various incurable diseases such as arteroskreloza, diabetes, malignant disease, heart attack, stroke and other serious and chronic diseases. Funds for the treatment of these diseases are antioxidants.
The health of the body's cells work best preventative. With preventive action should be initiated as early as possible in the body as the disease begins long before they can be diagnosed. After 35th when the cells begin to develop slower and more difficult to defend against free radicals, each man should take antioxidants.
Free radicals are highly reactive and extremely unstable atoms or groups of atoms that occur in the body due to metabolic processes, stress or originate from the environment. They attack the protective membranes of cells and genetic material (DNA and RNA) causing extensive damage in the cell. Research shows that the oxidation partly to blame for many serious diseases, including aging, cancer and atherosclerosis.
Only the appearance of free radicals in the body is promoted by smoking, air pollution, radiation, herbicides, various toxins in the environment, frequent sun exposure, dietary imbalances, procesovanom food and stress. The risk of diseases associated with free radicals can be reduced by adequate intake of antioxidants.
Antioxidants act in three different ways: they can lower the energy of free radicals, prevent their formation or stop the chain reaction of oxidation.

One of antioxidants that doctors around the world recommend the Megamin.
Our bodies produce several enzymes, including superoxide dismutase (SOD), catalase and glutathione peroxidase that neutralize the harmful effects of free radicals. If we want to raise the level of enzymes - an antioxidant, we need not bring their "building units". "Construction Unit" as zinc, manganese and copper for SOD and selenium for glutathione peroxidase. In addition to enzymes, many vitamins, minerals and coenzymes have antioxidant activity. These are vitamins C and E, beta carotene, lutein, lycopene, vitamin B3 in the form of niacin, vitamins B2, B6, coenzyme Q10, amino acids cysteine ​​and bioflavonoids.

Many herbal extracts such as Ginkgo biloba, green tea or grape seed also be able to provide strong antioxidant protection.

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