Stimulus-based definitions of stress characterize stress as a demanding or threatening event or situation, such as a high-stress job, overcrowding, or long commutes to work.
Hans Selye defined stress as the “response of the body to any demand, whether it is caused by, or results in, pleasant or unpleasant conditions.”
If stress remains excessive, it can lead to the erosion of physical health.
Over the past few decades, there has been increased recognition and awareness regarding the importance of stress and other psychological factors in maintaining cardiovascular health.
Blackburn and Epel (2012) stated that stress, especially during early life, can be as harmful to human health as smoking or fast food.
Response-based definitions of stress are limited because physiological reactions like accelerated heart rate can occur in response to non-stressful events, such as receiving unanticipated good news like a promotion or raise.
Stress can accelerate the cell biology of aging by shortening telomeres, which are DNA segments that protect the ends of chromosomes, according to a 2004 study by Sapolsky.
The term 'stress' did not enter popular vernacular until the 1970s, according to Lyon (2012).
Researchers have historically struggled to reach a consensus on a precise definition of stress, despite its widespread use in describing unpleasant feeling states like frustration, anger, conflict, being overwhelmed, or fatigue.
Stress evokes behavioral responses such as drinking alcohol, smoking, or taking actions directed at eliminating the cause of the stress.
Hans Selye defined stress as being largely dependent on how an individual interprets and assigns meaning to environmental events, rather than just the events themselves.
Moderate stress can enhance both immediate and delayed recall of educational material.
Stimulus-based definitions of stress are considered problematic because they fail to account for individual differences in how people perceive and react to challenging life events, such as how a prepared student experiences less stress during final exams than an unprepared student.
A person will subjectively experience a state of stress if they appraise an event as harmful and believe that the demands of the event exceed their available resources to manage or adapt to it.
Stress can have deleterious health implications, contributing to the onset and progression of a variety of physical illnesses and diseases, according to Cohen and Herbert (1996).
Psychoneuroimmunology is the field of study that examines how psychological factors, such as stress, influence the immune system and immune functioning.
Factors contributing to tension headaches include sleep deprivation, skipping meals, eye strain, overexertion, muscular tension caused by poor posture, and stress, according to MedicineNet (2013).
A daily diary study of 34 older widows found that their stress and anxiety levels were significantly reduced on days when they felt greater perceived control, according to research by Ong et al. (2005).
A problem-focused approach to managing stress involves actively attempting to address the source of the stress.
In a 1998 study by Cohen et al., 276 healthy volunteers were interviewed about recent stressful experiences and then exposed to nasal drops containing a cold virus to test the link between stress and illness susceptibility.
As stress levels increase, performance and general well-being (eustress) increase until they reach an optimal peak, after which performance begins to decline.
An individual is unlikely to experience stress if they do not appraise an event as harmful or threatening.
In a study of over 500 Swiss police officers and emergency service personnel, increased physical fitness was associated with reduced stress, and regular exercise was reported to protect against stress-related health problems (Gerber et al., 2010).
Response-based definitions of stress characterize stress as the physiological responses, such as increased arousal, that occur when an individual faces demanding or threatening environmental conditions.
Blackburn and Epel (2012) summarized that numerous studies have found associations between stress and eroded telomeres.
In a study of 20 adults with asthma, higher levels of negative emotions and stress were associated with increased airway obstruction and self-reported asthma symptoms, as measured by portable devices triggered by preprogrammed wristwatches (Smyth et al., 1999).
Stress slows down wound healing by impairing the immune responses necessary for the repair process, according to research by Glaser and Kiecolt-Glaser (2005).
Physically fit individuals are more resistant to the adverse effects of stress and recover more quickly from stress than less physically fit individuals, as evidenced by Cotton (1990).
Stress evokes cognitive responses such as difficulty concentrating or difficulty making decisions.
Lazarus and Folkman conceptualize stress as a process where an individual perceives and responds to events that they appraise as overwhelming or threatening to their well-being.
Hans Selye argued that stress is not inherently harmful and can sometimes act as a positive, motivating force that improves quality of life.
The use of social media platforms like Facebook may represent a new source of stress and a triggering factor for asthma attacks, particularly in depressed asthmatic individuals.
Stress is an experience that evokes physiological responses such as accelerated heart rate, headaches, or gastrointestinal problems.
Research into whether stress and negative emotional states influence immune function has been a focus for over three decades and has significantly impacted the field of health psychology.
The term 'stress' as it relates to the human condition first appeared in scientific literature in the 1930s.
Stress may contribute to tension headaches by increasing pain sensitivity in already-sensitive pain pathways in tension headache sufferers, according to Cathcart et al. (2008).
Stress increases sensitivity to pain, as demonstrated by Caceres & Burns (1997) and Logan et al. (2001).
Psychological factors likely serve as one of the most common triggers of asthma exacerbation because stress and emotions directly affect immune and respiratory functions.
Negative aspects of close relationships, including conflicts, arguments, lack of emotional support, and lack of reciprocity, are potent sources of stress that can negatively impact an individual's emotional and physical health.
In a study by Glaser et al. (1999), subjects with higher reported levels of stress produced lower levels of immune proteins necessary for healing when skin blisters were induced on their forearms.