Stress and Health Flashcards
Negative emotions and stress
directly prompt immune dysregulation and these processes may lead to subsequent maladaptive immune and endocrine changes
Psychoneuroimmunology (PNI)
- focuses on interaction between the CNS, endocrine system, immune system, and cognition/behaviour (psychological and social factors)
- Accepted that behaviour/ thoughts/ emotions influences immune system and therefore health
Depression
- MD puts you at a 4.5 x greater risk for heart attack
- Osteoporosis
- -Low bone mineral density in older females
-Decline in muscle strength in older men
- Reduced rehabilitation:
- -stroke
- -fractures
- -pulmonary disease
- -diabetes
- -Depressed diabetics less likely to follow dietary recommendations
Can increase risk of developing a disability by 73%
Can lead to worse:
Physical health
Social functioning
Perceived health
Poorer functioning caused by depression comparable to chronic medical conditions
Pain
- linked to depression and negative moods
- pain can increase heart rate and blood pressure, stress-related hormones
- disrupts mental and social functioning
- depression can increase morbidity by amplifying pain and disability
Anxiety
- risk for cardiovascular
- risk factor for CHD
bidirectional relationship of illness and anxiety& depression
illnesses can increase ones risk for anxiety & depression
anxiety and depression can increase risk for illness
Three Views of Stress
- focus on the environment (stress as a stimulus- stressor)
- reaction to stress: stress as a response (distress)
- relationship between person and the environment (stress as an interaction- coping)
4 types of stress responses
- cognitive
- emotional
- behavioral
- physiological
Distressed/depressed people exhibit:
- Poorer sleep & nutrition
- Drug & alcohol use —> altered cytokine levels
- Less exercise —> altered cytokine levels
- Less likely to seek medical care & adhere to it
Poorer sleep
decreases growth hormone
increases cortisol
Alcohol use
Poorer sleep & nutrition
Does Stress Cause Disease?
Disease is caused by many factors, one of which may be stress
Not everyone who gets stressed develops disease – why?
diathesis stress model
Diathesis-Stress Model
- Some people more vulnerable to stress-related diseases :
- -genetic weakness or biochemical imbalance predisposes them to disease
- Some people predisposed (diathesis) to reacting abnormally to stress – predisposition is inherited
- A persons vulnerability and stressful life events must be taken into account to explain who will get sick and who won’t
What are the physiological mechanisms explaining the link between stress and the disease?
direct influences of stress on nervous,
endocrine, and immune systems
Indirect effect occurring through changes
in health practices