oxidativestress

What is oxidative stress?


Everyone is familiar with stress. We experience it in varying forms and degrees every day. In small doses, stress can actually be beneficial to us. It is only when the stress becomes too great, affecting our physical or mental functioning, that it becomes a problem. In small doses, stressors can help give us increased energy and alertness, even helping to keep us focused on the problem at hand. This type of stress is good. People may refer to the experience of this type of stress as feeling "pumped" or "wired."As the level of pressure gets too great, stress eventually surpasses our ability to cope with it in a positive way. Often, people describe themselves as being stressed out, burned out, or at wits end. At this point, it is important to find positive and productive ways to deal with the stress and, more importantly, to address the person or situation that is causing the stress. Everyone reacts to stress differently. Each of us has a different level of pressure and anxiety that we can handle without a bad outcome. Only you can assess your level of tolerance to stressful situations. The best treatment for stress is to prevent getting into situations that are likely to overwhelm your ability to cope. This is not always possible because the stressors may often come from outside sources that are beyond your control.

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Stress

Everyone reacts differently to stressful situations, and a situation that one person finds stressful may not be stressful to someone else. Therefore, almost anything can cause stress and it has different triggers. Sometimes, just the thought of something, or several small things that build up, can trigger stress.

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Stress

Stress, as defined in the dictionary, is mental and physical tension or strain. When stress occurs in quantities that the system cannot handle, it produces pathological changes. This biological concept of stress was developed by the late Dr. Hans Selye, who intended originally for stress to indicate the cause rather than the effect. But through a linguistic error, he gave the term stress to the effect and then later had to use the word stressor for the cause. Therefore, it seems that outside influences are not the cause of the inward stress, rather the stress is the result of how we, as individuals, handle the influences from outside. Some individuals handle stress with ease, others panic or have an anxiety attack more readily. In other words, stress is a descriptive term for a reaction of how an individual handles pressure and tension, whether from internal or external sources. Constructive handling of pressure and tense situations will result in lesser symptoms of stress and anxiety. Poorly handled or denied reactions will result in greater symptoms of stress and anxiety. Hysteria is extreme reaction to inability to handle situations.

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Stress

Stress is a feeling of tension or strain that can be caused by many different things. Stress is a normal part of life, and sometimes it can be good for you. For example, the stress of having a deadline at work can encourage you to work hard and succeed. However, too much stress can make you feel bad and increase your chance of getting sick. The amount of stress that is "too much" is different for each person. Learning to control and cope with stress will help you live a happier and healthier life.

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Alcohol, Oxidative Stress, and Free Radical Damage

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Oxidative Stress

May 18, 2007 ... The study of oxidative stress in the mitochondria has shown that hydrogen peroxide is produced via the incomplete reduction of oxygen during ...

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Oxidative stress induces ADAM9 protein expression in human ...

by SY Sung - 2006 - Cited by 39 - Related articles

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NHLBI Workshop on Oxidative Stress/Inflammation and Heart, Lung ...

Nov 29, 2004 ... Oxidative stress and inflammation have been implicated in many heart, lung, blood, and sleep (HLBS) disorders, including atherosclerosis, ...

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Oxidative stress and amyloidogenesis

Oxidative stress and amyloid fibril formation are consistent major themes among processes thought to be involved in the pathogenesis of Alzheimer's disease. ...

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Contents

Stress
We all have stress sometimes. For some people, it happens before having to speak in public. For other people, it might be before a first date. What causes stress for you may not be stressful for someone else. Sometimes stress is helpful – it can encourage you to meet a deadline or get things done. But long-term stress can increase the risk of diseases like depression, heart disease and a variety of other problems. A stress-related illness called post-traumatic stress disorder (PTSD) develops after an event like war, physical or sexual assault, or a natural disaster. If you have chronic stress, the best way to deal with it is to take care of the underlying problem. Counseling can help you find ways to relax and calm down. Medicines may also help.

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Stress test
A stress test, also called an exercise stress test, is used to gather information about how well your heart works during physical activity. Because exercise makes your heart pump harder and faster than it does during most daily activities, an exercise stress test can reveal problems within your heart that might not be noticeable otherwise.

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Stress and anxiety
Stress can come from any situation or thought that makes you feel frustrated, angry, or anxious. What is stressful to one person is not necessarily stressful to another. Anxiety is a feeling of apprehension or fear. The source of this uneasiness is not always known or recognized, which can add to the distress you feel.

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Stress gastritis
Stress gastritis is swelling (inflammation) and weakening of the stomach lining.

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Stress fractures
Stress fractures are tiny cracks in a bone. Stress fractures are caused by the repetitive application of force, often by overuse such as repeatedly jumping up and down or running long distances. Stress fractures also can arise from normal use of a bone that's been weakened by a condition such as osteoporosis.

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Stress fracture
Stress fractures can be considered an overuse injury of a bone. The bones in the body are constantly changing, responding to the work load that is placed upon them, and there is a constant turnover of cells as bone acts to repair itself. The more load placed on the bone, the more likely that calcium will be placed at that site. The less use a bone receives, the less calcium can be found within it. If the stress of repetitive loads overwhelm the ability of the bone to repair itself, small cracks can begin to occur within the bone structure.

Stress management
Stress is a feeling of emotional or physical tension. See also: Stress in childhood

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Stress incontinence
Urinary incontinence is the unintentional loss of urine. Stress incontinence is prompted by a physical movement or activity such as coughing, sneezing or heavy lifting that puts pressure (stress) on your bladder. Stress incontinence is not related to psychological stress.

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Stress in childhood
Childhood stress can be caused by any situation that requires a person to adapt or change. The situation often produces anxiety. Stress may be caused by positive changes, such as starting a new activity, but it is most commonly linked with negative changes such as illness or death in the family.

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Oxidative stress - Wikipedia, the free encyclopedia
Oxidative stress represents an imbalance between the production and manifestation of reactive oxygen species and a biological system's ability to readily ...

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oxidative stress - definition of oxidative stress in the Medical ...
1 any of various pathologic changes seen in living organisms in response to excessive levels of cytotoxic oxidants and free radicals in the environment. ...