FINAL EXAM Flashcards
Stress
State of mental or emotional strain or tension from adverse or very demanding circumstances
Hans Selye
Hungarian born Canadian endocrinologist working out of McGill. He was a pioneer of biological effects of stressful stimuli
Selye definition of stress
The non-specific response of the body to any demand” & “That which produces stress”
General adaptation syndrome (GAS):
- Alarm: Body recognizes a stressor and is in state of alarm (activation of flight or fight)
- Resistance: Follows alarm reaction, it is a removal or disappearance of symptoms
- Exhaustion: As a result of chronic stress the body’s resources are depleted and unable to function properly
SAM system (3):
- Sympatho-adrenal-medullary pathway
- Perceived through the sympathetic nervous system of the autonomic nervous system
- Increases secretion of epinephrine and norepinephrine
Consequences of the SAM system (5):
- Suppression of cellular immune function
- Increased blood pressure and heart rate
- Variations in normal heart rhythm
- Sweating
- Neurochemical imbalances
HPA system (4):
- Hypothalamic-pituitary adrenal pathway
- Hypothalamus sends message to pituitary
- Anterior pituitary gland secretes ACTH
- This activates adrenal cortex to produce cortisol and glucocorticoids
Consequences of the HPA system (3):
- Cognitive decline
- Immuno-suppression
- Insulin resistance
Cortisol
Steroid hormone that the adrenal glands produce and release
Ways stress can be measured (5):
- Schedule of recent experiences - self report checklists
- Age specific checklists
- Life events and difficulties scale
- Interviews
- Difference in biographical circumstances
Problems with measuring stress via checklist (3):
- Memory and recall of life event
- What constitutes a life event; people interpret descriptors in very different ways
- Other factors influence how people respond (eg. Culture, gender, age)
Cognitive appraisal theory:
Originated in sociology/psychology. It was developed by Lazarus to describe and explain individual differences in adaptation
Theories of cognitive appraisal theory (3):
- Individuals constantly evaluate their relationship with the environment
- Behavioural and emotional responses determined by meaning attached to situation
- Psychological stress occurs when individuals appraise an interaction between themselves and the environment as greater than resource
3 types of stress appraisals:
- Harm or loss
- Threat
- Challenge
Life stress can lead to… (9):
- Asthma
- Rheumatoid Arthritis
- Anxiety
- Depression
- Cardiovascular disease
- Chronic pain
- HIV/AIDS
- Stroke
- Cancer
Animal research
Stress contributes to initiation, growth and metastasis of tumors
Human research
Stress contributes to antiviral defenses, DNA repair and cellular aging
According to Association of Dispositional Mindfulness with Stress article, what is the most common causes of stress among undergraduate students
Academic activities
Examples of academic stressors (5):
- Workload
- Too much information
- Studying
- Pressure to make friends when moving abroad
- Stress from living on residence
Psychological well-being (6):
- Autonomy
- Self-acceptance
- Environmental mastery
- Personal growth
- Purpose in life
- Positive relations with others
Cortisol levels at night vs morning
Low overnight and increase progressively during morning
Mindfulness
Awareness that emerges through paying attention on purpose, in the present moment, and nonjudgmentally to the unfolding of experience moment by moment
Dispositional mindfulness would be associated with (4):
- Lower perceived stress
- Lower physiological stress
- Higher psychological well-being
- Greater perceived stress = disrupted cortisol secretion, lower well-being
Stress-elicited endocrine responses (2):
- Hypothalamic-pituitary-adrenocortical axis (HPA)
- Sympathetic-adrenal-medullary (SAM)
Cortisol
Primary effector of HPA activation. It regulates a broad range of physiological processes like anti-inflammatory, metabolism, and gluconeogenesis
Catecholamines
Effector of SAM activation. Exerts regulatory effects on cardiovascular, pulmonary, hepatic, skeletal muscle, and immune systems
Repeated activation of HPA and SAM interferes with..
Control of other physiological systems resulting in increased risk for physical and psychiatric disorders
Friedrich Engel’s study - The Condition of the Working Class in England:
- Examined and observed differences in mortality rates in suburbs of Manchester
- Observed death rates correlated with quality of housing and quality of streets
Rudolf Virchow*
Sent to Poland to investigate an epidemic of typhus in 1848. He found that feudalism, unfair tax policies and lack of democracy leads to poor living conditions, inadequate diet, and poor hygiene = typhus
Virchow recommendation
Preserving health and preventing disease requires full and unlimited democracy and radical measures rather than mere palliatives
What makes people healthy (traditional) (3):
- Biomedical model
- Pathogenesis-origins of disease
- Emphasis on personal factors/consciousness raising
What makes people healthy (alternative) (3):
- Upstream approach, emphasizes social determinants of health
- Salutogenesis-origins of positive health
- Emphasis on structural factors
What makes people healthy (individual) (4):
- Lay health beliefs
- Self health management - self care capacity/coping skills
- Biology and genetic endowment
- Health protective behavior - personal health practice/lifestyle
Public Health Agency of Canada - 12 determinants:
- Social status
- Support networks
- Education
- Employment
- Social environment
- Physical environment
- Personal health practices
- Skills
- Healthy child development
- Biology
- Health services
- Gender
- Culture
Statistics of Canadians sick from their life, health care, genetics, and environment
- 50%, 25%, 15% and 10%
Social inequality
Relatively stable differences between individuals and groups of people in the distribution of power and privilege
Social inequity
Unfair, avoidable differences arising from poor governance, corruption, social exclusion, discrimination
Social gradient
Graded association between the indicator of socioeconomic status and population health
Socio-economic position (SEP)
Social and economic factors that influence what position individuals and groups hold in the social structure of a society
SEP individual level measures (4):
- Occupation
- Income
- Education
- Wealth
Traditional tips for better health (5):
- Don’t smoke. If you can, quit. If you can’t quit, cut down
- Keep physically active
- Follow a balanced diet with fruit and vegetables
- If you drink alcohol, do so in moderation
- Manage stress by taking time to relax
Social determinants perspective tips for better health (4):
- Don’t be poor. If you can, stop
- Practice not losing your job
- Don’t live in a neighbourhood with high crime rates
- Don’t belong to a visible minority
Social determinants of health
The conditions in which people are born, grow, live, work and age. The circumstances are shaped by distribution of money, power, and resources at global levels
Salutogenic model:
Developed by Antonvosky that highlights importance of improving living and working conditions to provide a health-protective environment and the health and wellness of population
Pathogenesis
Origins of disease
Salutogenesis
Term used to encourage researchers to explore factors that protect and enhance good health (rather than what contributes to ill health)
Personal determinants
Individual level (eg. Genetics, beliefs, attidues, personal health practices)
Structural determinants
Societal level (eg. Rates of employment, living and work conditions, health care)
Lalonde major determinants of population health (4):
- Human biology: genetics that could lead to susceptibility of disease/hereditary disease
- Lifestyle: personal factors such as smoking, drinking, eating and physical activity
- Environment: immediate surroundings like air, water, soil, and food
- Use of formal health-care services: Focuses on individual health rather than population health so it is not well equipped to deal effectively with major health challenges like preventing occurence of disease and enhancing health
What is considered the leading cause of health problems
Life style problems - Tobbaco use, poor diet, physical inactivity
Types of environmental factors:
- Natural environment: Housing, workplace
- Built environment: Planning and design of our cities
Sprawl
Term that means that people must drive greater annual distances and navigate more complex roads which increases risk of traffic accidents
Education
Important health determinant because it improves people’s ability to access and understand complex health related information about effective selfcare
Health literacy
The ability to access, understand, evaluate and communicate information as a way to promote, maintain and improve health
WHO definition of population
Powerful and transforming demographic force. As the proportion of older people increase, there is a rise in prevalence of chronic diseases
3 types of support:
- Emotional support: Feelings of being cared for and valued
- Instrumental support: Vital practice assistance with activities of daily living
- Informational support: Knowledge about health related matters
Primary determinants*
Household income, education level, employment status
Secondary determinants*
Daily behavioural practices and psychosocial wellbeing
Horizontal structures*
Immediate factors that shape health and well-being (eg. Family, work, living conditions)
Vertical structures*
Distant factors that indirectly influence health (eg. Social, political and economic policies)
Life course perspective
Theory that suggests that each life stage influences the next. Thus, experiences from childhood impact how our life unfolds and so on
Pathogenic approach goal
Discover origin and nature of disease for treatment and has an illness-avoidance orientation. Focuses on biophysical aspects for risk factors in micro-organisms