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Stress may also increase reward associated with food, leading to weight gain and further changes in eating habits. [58] Stress may contribute to various disorders, such as fibromyalgia, [59] chronic fatigue syndrome, [60] depression, [61] as well as other mental illnesses [13] and functional somatic syndromes. [62]
Cellular stress response is the wide range of molecular changes that cells undergo in response to environmental stressors, including extremes of temperature, exposure to toxins, and mechanical damage. Cellular stress responses can also be caused by some viral infections. [1]
This response causes an increase in heart-rate, blood pressure, and accelerated breathing. The kidneys release glucose, providing energy to combat or flee the stressor. [12] Blood is redirected to the brain and major muscle groups, diverted away from energy consuming bodily functions unrelated to survival at the present time. [11]
A stressor is a chemical or biological agent, environmental condition, external stimulus or an event seen as causing stress to an organism. [1] Psychologically speaking, a stressor can be events or environments that individuals might consider demanding, challenging, and/or threatening individual safety.
Stress hormones can also induce a state of chronic inflammation, [8] which can damage the body's tissues and organs and increase the risk of chronic diseases, such as arthritis, diabetes, and cardiovascular disease. These effects can make the body more vulnerable to chronic infections, such as bacterial infections and autoimmune diseases, which ...
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 ...
Conversely, early exposure to alcohol can increase vulnerability to stress and stress-related disorders. AUD is a type of epigenetic influencing disorder, it is able to be passed down generation to generation epigenetically following a process mentioned before as transgenerational epigenetics.
Chronotropic effects (from chrono-, meaning time, and tropos, "a turn") are those that change the heart rate. Chronotropic drugs may change the heart rate and rhythm by affecting the electrical conduction system of the heart and the nerves that influence it , such as by changing the rhythm produced by the sinoatrial node .