Introduction to Health and Health Research

Dimensions of Wellness

Wellness is a holistic integration of physical, mental, emotional, social, and environmental health. (là sự kết hợp toàn diện giữa sức khỏe thể chất, tinh thần, cảm xúc, xã hội và môi trường.) Understanding these dimensions helps individuals achieve optimal health.

• Physical Wellness: Maintaining a healthy body through exercise, nutrition, and sleep.

• Mental/Emotional Wellness: Managing stress, emotions, and psychological well-being.

• Social Wellness: Building healthy relationships and effective communication.

• Environmental Wellness: Living in harmony with the environment and making choices that benefit planetary health.

Health is defined as a state of complete physical, mental, and social well-being, not merely the absence of disease.

• Major Health Problems in Canada: Chronic diseases (e.g., heart disease, diabetes), mental health issues, obesity.

• Social Determinants of Health: Gender, ethnicity, income, disability, family history, and environment all influence health outcomes.

• Health Promotion: Strategies and policies aimed at improving health and preventing disease.

• Health Research: Systematic investigation to establish facts and reach new conclusions in health sciences.

Sleep and Health

Understanding Sleep and Sleep Cycles

Sleep is a natural, recurring state of rest essential for physical and mental health. The sleep cycle consists of several stages, including REM and non-REM sleep.

• Stages of Sleep: NREM (Stages 1-3) and REM sleep; each stage plays a role in restoration and memory consolidation.

• Sleep Deprivation: Lack of adequate sleep can lead to impaired cognitive function, mood disturbances, and increased risk of chronic diseases.

• Sleep and Students: University students often experience irregular sleep patterns, which can affect academic performance and well-being.

• Improving Sleep: Good sleep hygiene, regular schedules, and minimizing screen time before bed can enhance sleep quality.

Psychological Health

Mental Illnesses and Their Characteristics

Psychological health encompasses emotional, psychological, and social well-being. Mental illnesses are prevalent among youth and include a range of disorders.

• Anxiety Disorders: Characterized by excessive worry and fear. Symptoms include restlessness, rapid heartbeat, and difficulty concentrating.

• Obsessive-Compulsive Disorder (OCD): Involves unwanted repetitive thoughts and behaviors.

• Depression: Persistent sadness, loss of interest, and changes in appetite or sleep.

• Bipolar Disorder: Alternating periods of mania and depression.

• Borderline Personality Disorder (BPD): Instability in mood, relationships, and self-image.

• Psychosis: Loss of contact with reality, including hallucinations and delusions.

• Treatment: Includes therapy (CBT, medication, support groups).

Stress Management

Understanding and Managing Stress

Stress is the body's response to perceived challenges or threats. Chronic stress can negatively impact health and behavior.

• Characteristics of Stress: Physical (headaches, fatigue), emotional (irritability), and behavioral (changes in eating/sleeping).

• Causes: Academic pressure, financial concerns, relationships.

• Impact: Stress can lead to anxiety, depression, and physical health problems.

• Management Strategies: Exercise, mindfulness, time management, seeking support.

Nutrition and Weight Management

Body Composition, Diet, and Health

Nutrition and weight management are crucial for maintaining overall health. Understanding body composition and healthy eating habits is essential.

• Measuring Body Composition: Methods include BMI, skinfold measurements, bioelectrical impedance.

• Disordered Eating: Includes anorexia, bulimia, binge eating disorder.

• Fat Distribution: Varies among individuals; central obesity is linked to higher health risks.

• Obesity Factors: Genetics, environment, lifestyle, and psychological factors.

• Balanced Diet: Includes a variety of foods from all food groups.

• Essential Nutrients: Carbohydrates, proteins, fats, vitamins, minerals, and water.

• Food Labels: Important for understanding serving sizes and nutritional content.

Epidemiology

Principles and Applications

Epidemiology is the study of the distribution and determinants of health-related states in populations.

• Descriptive Epidemiology: Examines patterns of disease occurrence.

• Analytic Epidemiology: Investigates causes and risk factors.

• Surveillance: Ongoing collection and analysis of health data.

• Objectives: Identify risk factors, prevent disease, and promote health.

Sexuality, Contraception, and Health Relationships

Sexual Health and Relationship Dynamics

Sexual health involves physical, emotional, and social aspects of sexuality and relationships.

• Sexual Response: Four phases: excitement, plateau, orgasm, resolution.

• Contraceptives: Permanent (sterilization) and reversible (condoms, pills, IUDs) methods; each has pros and cons.

• Birth Control: Methods vary in effectiveness and suitability.

• Pregnancy and Labour: Multiple stages; prenatal care is essential.

• Relationships: Patterns in adulthood, concept of "love," and importance of communication.

Public Health, Healthcare System, and Social Determinants

Systems and Determinants of Health

Public health focuses on population-level health promotion and disease prevention. The healthcare system provides medical care to individuals.

• Integrated Care: Coordination between public health and healthcare services.

• Social Determinants: Income, education, environment, and social support.

• Health Literacy: Ability to access, understand, and use health information.

• Health Inequalities: Differences in health outcomes due to social, economic, and environmental factors.

Health and Mainstream Messaging

Communication and Misinformation

Effective health communication is essential for promoting healthy behaviors and combating misinformation.

• Social Marketing: Use of marketing principles to influence health behaviors.

• Health Communication: Steps include message development, delivery, and evaluation.

• Risk Communication: Informing the public about health risks.

• Misinformation: False or misleading information; can negatively impact health decisions.

• Combating Misinformation: Critical evaluation of sources, promoting evidence-based information.

Aging and Dying

Models and Processes

Aging is a complex process involving biological, psychological, and social changes. Understanding dying helps improve care for older adults.

• Models of Aging: Biological, psychological, and social models explain different aspects of aging.

• Dying Process: Physical, emotional, and spiritual dimensions; palliative care focuses on comfort.

• Covid-19 Impact: Increased vulnerability and isolation in long-term care settings.

Healthy Planet, Healthy People

Environmental Health and Human Well-being

The health of the planet directly affects human health. Environmental degradation, climate change, and food waste are key concerns.

• Unhealthy Planet: Pollution, climate change, and loss of biodiversity harm human health.

• Food Loss and Waste: Impacts food security and environmental sustainability.

• Social Aspects: Policies and community actions can improve planetary health.

Global Health and Health Equity

Bending the Arc and Universal Health

Global health addresses health issues that transcend national boundaries. Health equity ensures fair access to health resources for all.

• Community Health Model: Focuses on local solutions and community engagement.

• Universal Health Equity: Strives for equal access to healthcare worldwide.

• Disease Treatment: Global efforts to combat infectious and chronic diseases.

Exam Preparation Advice

• Rest: Ensure adequate sleep before the exam.

• Study Strategies: Use lecture notes and summaries for review; avoid last-minute cramming.

• Question Approach: Read questions carefully, eliminate wrong answers, and trust your instincts.

• Answer Transfer: Circle answers on the exam script and transfer to scantron accurately.

Tips and Resources

• Exam Survival Guide: Utilize university resources for exam preparation and support.