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However, the problem arises when there is a persistent threat. First-time exposure to a stressor will trigger an acute stress response in the body; however, repeated and continuous exposure causes the stressor to become chronic. [4] McEwen and Stellar (1993) argued there is a "hidden cost of chronic stress to the body over long time periods". [8]
A new study shows that stress can affect colorectal cancer progression by altering gut balance. It comes in the wake of research highlighting the importance of sleep to gut health and tumor ...
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [3] [4] Cancer can be difficult to diagnose because its signs and symptoms are often nonspecific, meaning they may be general phenomena that do not point directly to a specific disease process.
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The increase in stress levels causes a shortening of dendrites in a neuron. Therefore, the shortening of dendrites causes a decrease in attention. [5] Chronic stress also causes greater response to fear of the unlearned in the nervous system, and fear conditioning. [16] In the immune system, the increase in levels of chronic stress results in ...
Stress ulceration is a single or multiple fundic mucosal ulcers that causes upper gastrointestinal bleeding, and develops during the severe physiologic stress of serious illness. It can also cause mucosal erosions and superficial hemorrhages in patients who are critically ill, or in those who are under extreme physiologic stress, causing blood ...
Some substances cause cancer primarily through their physical, rather than chemical, effects on cells. [32] A prominent example of this is prolonged exposure to asbestos, naturally occurring mineral fibers which are a major cause of mesothelioma, which is a cancer of the serous membrane, usually the serous membrane surrounding the lungs. [32]
Though 80–90 percent of cancer pain can be eliminated or well controlled, nearly half of all people with cancer pain in the developed world and more than 80 percent of people with cancer worldwide receive less than optimal care. [28] Cancer changes over time, and pain management needs to reflect this.