Health, Stress, and Coping: Mini-Textbook Study Notes

Health Psychology

Definition and Scope

Health psychology examines how biological, social, and psychological factors influence health and illness. It explores behaviors such as smoking and obesity, and their impact on physical and mental well-being.

• Key Point: Health psychology integrates knowledge from multiple domains to understand health outcomes.

• Example: Smoking and obesity are influenced by genetics, lifestyle, and psychological stress.

Smoking

Nicotine and Its Effects

Nicotine, an ACh agonist derived from the tobacco plant, affects the brain and body in various ways. It can improve memory, concentration, and mood, but also causes significant health risks.

• Positive Effects: Enhances memory, concentration, reduces stress and anxiety, suppresses hunger.

• Negative Effects: Contains toxic chemicals, increases risk of cancer, heart disease, pulmonary diseases, and is potentially deadly.

Conditioning and Reward Circuit

Smoking behaviors are reinforced through conditioning, with cues activating the brain's reward circuit, leading to both positive and negative reinforcement.

Prevention Strategies

• Laws: Banning smoking in public places.

• Taxes and Warning Labels: Discourage use by increasing cost and awareness.

Obesity

Body Mass Index (BMI)

BMI is a measure used to estimate healthy body weight based on height. It is calculated as:

$\text{BMI} = \frac{\text{weight (kg)}}{\text{height}^2 \text{(m)}}$

Prevalence and Influences

• Genetics and Set Point: Genetic factors and biological set points influence body weight.

• Sedentary Lifestyle: Lack of physical activity increases risk.

• Barriers to Weight Loss: Psychological, social, and environmental factors can impede weight loss.

Health Consequences

• Cardiovascular Disease

• Diabetes

• Osteoarthritis

• Cancer

Stress

Definition and Causes

Stress is a psychological and physiological reaction that occurs when perceived demands exceed available resources. It is influenced by cognitive appraisal and life events.

• Cognitive Appraisal Theory: Stress depends on how an individual evaluates a situation and their coping resources.

• Social Readjustment Rating Scale: Measures stress based on life events.

Task Performance and Stress

Performance on tasks is affected by arousal level, with difficult tasks requiring lower arousal for optimal performance.

Physiology of Stress

Fight or Flight Response

The fight or flight response involves physiological changes in response to threats, mediated by the autonomic nervous system (ANS) and the hypothalamic-pituitary-adrenal (HPA) axis.

• General Adaptation Syndrome (GAS): Consists of alarm, resistance, and exhaustion stages.

• ANS: Sympathetic (activates) and parasympathetic (calms) branches.

• HPA Axis: Releases cortisol, affecting immune function and energy availability.

Immunity & Illness

Psychoneuroimmunology

Psychoneuroimmunology studies the relationship between the nervous system and immune system, highlighting how stress can increase susceptibility to illness.

• Coronary Heart Disease: Stress contributes to the development of heart disease.

• Personality Types: Type A (impatient, competitive) vs. Type B (relaxed, easygoing) personalities influence stress and health outcomes.

• Stress Eating: Emotional stress can lead to unhealthy eating behaviors.

Coping & Well-Being

Coping Strategies

Coping refers to the processes used to manage demands, stress, and conflict. Strategies include problem-focused and emotion-focused approaches.

• Problem-Focused Coping: Addressing the source of stress directly.

• Emotion-Focused Coping: Managing emotional responses to stress.

• Positive Psychology: Focuses on human strengths, positive emotions, and resilience.

• Resilience: The ability to recover from adversity or illness.

• Post-Traumatic Growth: Positive psychological change following trauma.

Creativity and Recovery

Creativity, such as the Remote Associates Test (RAT), is linked to positive coping and well-being. Recovery of the ANS is faster with positive emotions.

Meditation & Relaxation

Meditation Techniques

Meditation involves shifting consciousness to a state of high focus and awareness. Techniques include focused attention (FA) and open monitoring (OM) meditation.

• Mindfulness-Based Stress Reduction (MBSR): Practices such as body scan reduce stress and increase meaningfulness.

• Happiness and Relaxation: Meditation enhances well-being and relaxation.

References

• Vaping: https://www.youtube.com/watch?v=cHEOsKddURQ

• HPA axis: https://www.youtube.com/watch?v=QAeBKRaNri0

• Meditation: https://www.youtube.com/watch?v=LX71ZTAsmg8