Clinical Deep Dives
Clinical Deep Dives is a podcast for clinicians and learners who want understanding, not just information. Using classic medical and surgical texts as a guide and the generative power of AI, each episode explores ideas with curiosity and clarity. Designed for learning on the move and knowledge that actually sticks.
Episodes
PSYCH 028: Functional Brain Connectivity and Psychopathology
The brain is not simply a collection of regions, but a network defined by how those regions communicate. This chapter explores functional connectivity - the dynamic relationships between different parts of the brain - and how alterations in these patterns contribute to psychopathology.In this episode, we examine how brain regions coordinate their activity over time, forming networks that support f
PSYCH 027: Radiotracer Imaging with Positron Emission Tomography and Single Photon Emission Computed Tomography: Fundamental Principles, Methodology and Role in Neuropsychiatric Research
While MRI shows structure and EEG captures electrical activity, radiotracer imaging reveals something different: the brain’s molecular activity in action. This chapter explores PET and SPECT - techniques that allow us to track specific biological processes in vivo.In this episode, we examine how radiolabelled tracers bind to particular receptors, transporters, or metabolic pathways, enabling us to
PSYCH 026: Electroencephalography in Psychiatry
If imaging reveals structure, electroencephalography (EEG) captures activity in real time. This chapter explores how electrical signals generated by neuronal populations can be recorded from the scalp, offering a dynamic view of brain function.In this episode, we examine how EEG reflects synchronised activity across neural networks, producing patterns that can be analysed in terms of frequency, am
PSYCH 025: Nuclear Magnetic Resonance Imaging and Spectroscopy: Basic Principles and Recent Findings in Neuropsychiatric Disorders
Much of psychiatry has historically relied on inference - understanding brain function indirectly through behaviour and experience. Nuclear magnetic resonance (NMR) techniques, including MRI and spectroscopy, have transformed this landscape, allowing us to visualise both structure and chemistry in vivo.In this episode, we explore the principles underlying magnetic resonance imaging - how magnetic
PSYCH 025: Nuclear Magnetic Resonance Imaging and Spectroscopy: Basic Principles and Recent Findings in Neuropsychiatric Disorders
Much of psychiatry has historically relied on inference - understanding brain function indirectly through behaviour and experience. Nuclear magnetic resonance (NMR) techniques, including MRI and spectroscopy, have transformed this landscape, allowing us to visualise both structure and chemistry in vivo.In this episode, we explore the principles underlying magnetic resonance imaging - how magnetic
PSYCH 024: Computational Modelling Approaches to Psychiatry
Psychiatry often deals with processes that cannot be directly observed - beliefs, predictions, learning, and perception. Computational psychiatry offers a way to formalise these processes, translating them into models that can be tested, refined, and understood.In this episode, we explore how mathematical and computational frameworks are used to describe how the brain processes information. Concep
PSYCH 023: Basic Systems Neuroscience
Understanding individual neurons is only the beginning. This chapter shifts the lens to systems neuroscience - exploring how networks of interconnected regions work together to produce cognition, emotion, and action.In this episode, we examine how the brain operates as a set of distributed systems rather than isolated modules. Circuits linking cortical and subcortical regions coordinate functions
PSYCH 022: Animal Models in Psychiatry
Much of what we understand about brain function and psychiatric illness has been built through animal research. Yet modelling the human mind in animals is inherently complex. This chapter explores how animal models are used in psychiatry - and the limits of what they can truly represent.In this episode, we examine different types of animal models, including those based on genetic manipulation, pha
PSYCH 021: Pharmacogenetics
Why does one patient respond well to a medication while another experiences no benefit - or significant side effects? Pharmacogenetics seeks to answer this question by examining how genetic variation influences drug metabolism, efficacy, and tolerability.In this episode, we explore how differences in genes encoding drug-metabolising enzymes, receptors, and transporters can alter how medications ar
PSYCH 020: Epigenetics in Psychiatry: The Promise for New Biomarkers and Treatments
If the genome provides the script, epigenetics determines how it is read. This chapter explores how environmental influences - from early life experiences to chronic stress - can modify gene expression without altering the underlying DNA sequence.In this episode, we examine mechanisms such as DNA methylation and histone modification, which regulate whether genes are activated or silenced. These pr
PSYCH 019: Gene Mapping Investigations of Psychiatric Disorders
If multi-omics reveals layers of biological complexity, gene mapping attempts to locate patterns within that complexity. This chapter explores how researchers identify genetic contributions to psychiatric disorders - not through single genes, but through probabilistic associations across the genome.In this episode, we examine approaches such as linkage studies, candidate gene studies, and genome-w
PSYCH 018: Genome, Transcriptome, and Proteome: The Molecular Genetics, Biochemistry, and Multi-Omics Underlying the Neurobiology of Mental Disorders
If genes are the script, they are only the beginning of the story. This chapter expands the lens to multiple layers of biological information - genome, transcriptome, and proteome - revealing how psychiatric disorders emerge not from single mutations, but from complex systems of regulation and interaction.In this episode, we explore how the genome provides the foundational code, while the transcri
PSYCH 017: Basic Science of Appetite
Appetite is often mistaken for a simple biological drive, but it is in fact a finely regulated system integrating energy balance, reward, emotion, and cognition. This chapter explores how the brain determines when to eat, what to eat, and when to stop.In this episode, we examine the interplay between homeostatic systems - which monitor energy needs - and hedonic systems, which assign pleasure and
PSYCH 016: Pain Systems: Interface with Affective and Motivational Mechanisms
Pain is often described as a sensory experience, but in psychiatry it is something far more complex. This chapter explores how pain is constructed at the intersection of sensory input, emotional processing, and motivational systems.In this episode, we examine how nociceptive signals are only the beginning. The brain interprets these signals through networks involving the insula, anterior cingulate
PSYCH 015: Basic Science of Sleep
Sleep is often treated as absence - a passive state where the brain switches off. This chapter challenges that notion, revealing sleep as an active, highly organised process essential for brain function and mental health.In this episode, we explore the architecture of sleep - its stages, cycles, and regulatory systems. Non-REM and REM sleep represent distinct physiological states, each contributin
PSYCH 014: Chronobiology, Circadian Rhythm, and Psychiatry
The brain does not function in a constant state - it operates in rhythms. This chapter explores chronobiology and circadian systems, revealing how internal biological clocks organise sleep, energy, cognition, and emotional regulation across the day.In this episode, we examine the circadian system as a master regulator, synchronising physiological and psychological processes with environmental cues
PSYCH 013: Immune–Brain Interactions in Psychiatry
The brain does not operate in isolation from the body’s defence systems. This chapter explores the evolving understanding of how the immune system and the brain interact - not only in illness, but as part of normal regulation of mood, behaviour, and cognition.In this episode, we examine how immune signalling molecules, particularly cytokines, influence brain function. These signals can alter neuro
PSYCH 012: Psychoneuroendocrinology
The mind does not exist in isolation from the body. This chapter explores psychoneuroendocrinology - the interface between brain, hormones, and behaviour - and how internal physiological states shape emotional and psychological experience.In this episode, we examine how the brain communicates with the endocrine system, particularly through the hypothalamic–pituitary–adrenal (HPA) axis. This system
PSYCH 011: Intraneuronal Signalling
While synapses transmit signals between neurons, the real transformation happens within. This chapter explores intraneuronal signalling - the complex cascade of intracellular processes that determine how a neuron responds to incoming information.In this episode, we move inside the neuron to examine how signals are not simply received, but interpreted. Neurotransmitters bind to receptors, triggerin
PSYCH 010: Neurotrophic Factors
Not all neural processes are about signalling in the moment. Some operate on a different axis entirely - governing growth, survival, and long-term adaptation. This chapter explores neurotrophic factors, the molecules that support the development, maintenance, and plasticity of neural systems.In this episode, we examine key neurotrophic factors such as brain-derived neurotrophic factor (BDNF) and t
PSYCH 009: Novel Neurotransmitters
For decades, psychiatry has centred on a core set of neurotransmitters - dopamine, serotonin, noradrenaline. Yet the brain’s chemical language is far richer than once imagined. This chapter explores emerging and “novel” neurotransmitters that challenge traditional models and open new pathways for understanding and treatment.In this episode, we examine systems such as glutamatergic modulation beyon
PSYCH 008: Neuropeptides: Biology, Regulation and Role in Neuropsychiatric Disorders
Beyond fast neurotransmission lies a quieter, more sustained form of communication. Neuropeptides do not simply transmit signals - they shape the context in which those signals are interpreted. This chapter explores a class of molecules that operate over longer timescales, influencing emotion, stress, bonding, and behavioural states.In this episode, we examine how neuropeptides such as CRH, oxytoc
PSYCH 007: Biogenic Amine Neurotransmitters
If amino acid neurotransmitters set the basic tone of brain activity, biogenic amines shape its nuance. This chapter explores the neurotransmitter systems that modulate how we feel, think, and act - particularly dopamine, serotonin, and noradrenaline.In this episode, we examine how these systems do not simply transmit signals, but regulate them. They influence mood, reward, motivation, attention,
PSYCH 006: Amino Acid Neurotransmitters
At the heart of neural communication lie a small group of powerful molecules that set the tone of brain activity. This chapter focuses on amino acid neurotransmitters - particularly glutamate and GABA - which together form the fundamental balance between excitation and inhibition.In this episode, we explore how glutamate drives neural activation, enabling signalling, plasticity, and learning, whil
PSYCH 005: Cellular and Synaptic Basis of Neural Signalling
Beneath every thought, emotion, and behaviour lies a fundamental process: communication between neurons. This chapter explores how individual brain cells generate, transmit, and modulate signals - forming the basis of all mental activity.In this episode, we examine the neuron as both an electrical and chemical entity. Electrical signals travel along axons as action potentials, while communication
PSYCH 004: Neural Development and Neurogenesis
If genomics provides the script, neural development is the unfolding performance. This chapter explores how the brain is physically constructed - how neurons are generated, guided, connected, and ultimately sculpted into functional systems.In this episode, we follow the journey from early neurogenesis to the formation of complex neural circuits. Neurons are born in specific regions, migrate to the
PSYCH 003: Functional Genomics of Human Brain Development
Before there are thoughts, emotions, or behaviours, there is a set of instructions - not fixed, but dynamic. This chapter explores how genes guide the development of the human brain, and how this process unfolds across time, context, and experience.In this episode, we examine how the genome is not a static blueprint but a responsive system. Genes are turned on and off in precise sequences, shaping
PSYCH 002: Functional Neuroanatomy
If neuroscience asks how the brain works, functional neuroanatomy asks where those processes unfold. This chapter moves us from abstraction into structure — not as static geography, but as a living map of function.In this episode, we explore how different brain regions contribute to distinct domains of mental life: perception, emotion, memory, decision-making, and behaviour. The cortex, limbic sys
PSYCH 001: The Neuroscience of Psychiatry
Psychiatry sits at a unique crossroads in medicine: it is the only specialty tasked with understanding how biological processes give rise to subjective experience. This chapter lays the foundation for that endeavour by exploring the neuroscience that underpins thought, emotion, perception, and behaviour.In this episode, we examine how the brain is not simply a collection of structures, but a dynam
ANAHN 22: Fasciae of the Head and Neck - The Hidden Planes of Spread
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comThis chapter is not about muscles, bones, or vessels - it is about the architecture that surrounds them.Fascia is:* Subtle* Often ignored* But clinically decisiveBecause it does something quietly powerful:it creates pathways - for movement, for containment… and for disease.As described in the opening section,
ANAHN 21: Vascular Supply of the Head and Neck - The Rivers That Sustain and Spread
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comThis chapter is the circulatory map of the head and neck - a system of arteries that deliver, and veins that quietly return.But unlike a simple plumbing system, this network is:* Redundant* Interconnected* And clinically unforgivingBecause:* A blockage can blind* A rupture can flood* A connection can spread in
ANAHN 20: Lymphatics of the Head and Neck - The Hidden Pathways of Disease and Defence
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf Chapter 19 was about interrupting sensation,this chapter is about something quieter - and arguably more powerful:tracking disease through the body.Because the lymphatic system does not shout.It signals.It tells you:* Where infection started* Where cancer may spread* Where the body is fighting backAnd it doe
ANAHN 19: Anatomic Basis for Local Anesthesia - Mapping Silence in the Face
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf Chapter 18 gave us the wiring of the cranial nerves,this chapter teaches us something far more practical:How to interrupt that wiring - safely, deliberately, and effectively.This is not just anatomy.This is applied anatomy - where knowledge becomes intervention.
ANAHN 18: Cranial Nerves - The Twelve Messengers of the Mind
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf Chapter 17 was the axis,this chapter is the distribution network.From the brainstem emerge twelve distinct pathways - each with:* A purpose* A territory* A vulnerabilityTogether, they transform central command into lived experience:* Sight* Sound* Expression* Swallowing* Speech
ANAHN 17: Brain and Spinal Cord - The Living Axis of Thought, Control, and Continuity
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf Chapter 16 was the gateway,this chapter is the command centre and the highway combined.Here, structure becomes function:* Protection becomes layered* Fluid becomes cushioning intelligence* Tissue becomes thoughtAnd at its core:* The brain interprets* The spinal cord conducts* The system sustains life
ANAHN 16: Palate, Pharynx, and Larynx - The Gateways of Breath, Voice, and Passage
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf Chapter 15 was the living floor,this chapter is the gateway system.Three overlapping purposes unfold here:* Separation (air vs food)* Protection (airway vs aspiration)* Expression (voice vs silence)And at the centre of it all:* The palate closes* The pharynx channels* The larynx speaks
ANAHN 15: Submandibular Region and Floor of Mouth - The Living Foundation of Speech and Swallow
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf the previous episode was about hidden corridors,this chapter is about living ground.Because here, beneath the tongue, lies a region that:* Lifts* Moves* Secretes* CoordinatesIt is not static anatomy.It is functional architecture in motion.And everything converges here:* Air becomes speech* Food becomes swal
ANAHN 14: Pterygopalatine Fossa, Nasal Cavity, and Paranasal Sinuses - The Hidden Corridors of Air and Flow
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf the temporomandibular joint was precision,this chapter is about passage.Because here, the head and neck transforms into a system of:* Channels* Cavities* ConnectionsNot solid structures - but spaces that communicate.Air moves.Mucus drains.Nerves travel unseen.And at the centre of it all lies a small, almost
ANAHN 13: Temporomandibular Joint - Where Motion Meets Precision
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf the deep face was the engine,then the temporomandibular joint is the gearbox.It does not generate force.It directs it.It transforms:* Muscle contraction → controlled motion* Force → alignment* Movement → functionAnd it does this in two places at once, perfectly synchronised.Because this is not one joint.It
ANAHN 12: Deep Face - The Engine Beneath Expression
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf the parotid bed was a crossroads,then the deep face is something far more powerful:It is an engine room.Hidden beneath the mandible and zygomatic arch,this is where:* Force is generated* Motion is refined* Rhythm becomes automaticNot visible.But essential.Because here, the face stops expressing…and starts w
ANAHN 11: Parotid Bed - The Crossroads of the Face
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf the orbit was a lens,and the ear a translator,then the parotid bed is something very different:It is a crossroads.Not quiet. Not isolated.But dense, alive, and dangerously interconnected.Here:* A gland secretes* A nerve branches into identity* Arteries divide into life-supplying streamsAnd everything… passe
ANAHN 10: Eye and Ear - The Instruments of Perception
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf the cranial fossa was a chamber of protection,this episode is a chamber of interpretation.Here, the body performs one of its most extraordinary feats:* It converts light into sight* It transforms vibration into sound* It translates motion into balanceThe eye and ear are not simply organs.They are interfaces
ANAHN 09: Cranial Fossa - The Chamber of Protection and Passage
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf the face was a stage, the cranial fossa is the vault beneath it - a protected chamber where the brain rests, suspended within layers of defence, yet threaded with pathways of extraordinary vulnerability.This chapter is not simply about structure.It is about containment, support, and flow.Within the cranial
ANAHN 08: The Face - Expression, Emotion, and Exposure
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf the neck was a corridor, the face is a stage.But this is not a passive surface.It is a living interface where structure meets meaning.The face is where:* Muscles do not just move - they express* Nerves do not just transmit - they interpret* Blood does not just flow - it reveals life in colour and warmthAnd
ANAHN 07: The Neck - Conduit, Compass, and Crossroads
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf the skull was the fortress, the neck is the gateway system that keeps it alive.This chapter is not about isolated structures - it is about relationships in motion. The neck is a tightly packed corridor where nerves, vessels, muscles, and viscera coexist in remarkable proximity.Everything that sustains the b
ANAHN 06: Osteology of the Head and Neck
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf embryology was the negotiation, osteology is the contract - fixed, structured, and enduring.This chapter shifts us from possibility to precision. The soft choreography of development has now hardened into bone, and every ridge, foramen, and articulation carries a purpose.
ANAHN 05: Embryology of the Head and Neck
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comIf Episode 4 showed us the finished cathedral, Chapter 5 reveals the construction site - and it is anything but orderly.The head and neck do not simply “grow.” They assemble, fuse, migrate, and transform - often within narrow windows of time where a single misstep can echo for life.At the centre of this proces
ANAHN 04: The Oral Cavity, Palate, and Pharynx
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comThis episode brings us to one of the most clinically alive regions of anatomy - the oral cavity and its continuation into the pharynx. This is not just a space; it is a gateway. Everything that sustains life - air, food, communication - passes through here.At its simplest, the oral cavity is divided into two s
ANAHN 03: Body Systems
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comThis chapter steps back from regions and maps the body as a living network of systems - each one specialised, yet deeply interdependent. If Chapter 2 gave us the language of anatomy, this chapter gives us its living context.We begin at the smallest scale: the cell, the fundamental unit of life. Cells organise
ANAHN 02: Anatomic Concepts
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comThis chapter is the grammar of anatomy - the quiet framework that allows everything else to make sense. Before we explore structures, we must first understand how anatomists think, describe, and orient themselves within the human body.At its core, anatomy is a spatial science. It does not simply name structure
ANAHN 01: Introduction to Head and Neck Anatomy
This is a free preview of a paid episode. To hear more, visit drmanaankarray.substack.comThis opening chapter is not about structures - it is about seeing. It traces the long arc of anatomical curiosity, from early cranial surgery thousands of years ago to the disciplined dissections of Renaissance Europe. What begins as fascination becomes method, and what begins as observation becomes science.We
GPH 109: The Future of International Public Health
International public health is entering a period of profound transformation. Globalisation, climate change, demographic shifts, pandemics, digital surveillance technologies, and geopolitical realignments are reshaping both risk and response.This chapter examines the evolving role of multilateral organisations, global financing mechanisms, pandemic preparedness frameworks, and cross-border governan
GPH 108: Private Support of Public Health
Public health is not funded or delivered by governments alone. Philanthropic foundations, private donors, non-governmental organisations, corporate partners, and social enterprises play an increasingly prominent role in financing, research, service delivery, and advocacy.This chapter examines the evolution of private sector engagement in public health, including funding mechanisms, public–private
GPH 107: Environmental/ Chemical/ Radiation Emergency Response
Environmental, chemical, and radiation emergencies present complex and potentially invisible threats to population health. Industrial spills, toxic releases, nuclear incidents, and accidental exposures demand rapid assessment, specialised expertise, and coordinated containment.This chapter explores hazard identification, exposure pathways, toxicology, dose assessment, decontamination protocols, ev
GPH 106: Emergency Public Health and Humanitarian Assistance
Emergencies - whether natural disasters, armed conflict, epidemics, or sudden displacement - disrupt infrastructure, overwhelm health systems, and expose populations to acute risk. Public health in emergencies requires speed, coordination, and ethical clarity.This chapter explores rapid health needs assessment, emergency surveillance, outbreak control, water and sanitation provision, food security
GPH 105: Training Local Health Workers
Local health workers - including community health workers, village health volunteers, and lay health providers - are essential to delivering primary care, health promotion, vaccination, maternal support, and disease surveillance in many settings.This chapter explores the training, supervision, integration, and sustainability of local health worker programmes. It examines task-shifting, decentralis
GPH 104: Training Public Health Professionals (Developing Countries)
Effective public health systems depend on skilled professionals capable of surveillance, programme design, outbreak response, policy analysis, and leadership. In many low- and middle-income countries, workforce shortages, migration, limited training infrastructure, and funding constraints pose significant challenges.This chapter examines strategies for developing public health capacity, including
GPH 103: Health Services Strategies
Health services strategies determine how care is delivered, funded, prioritised, and evaluated. This chapter explores models of healthcare organisation, including universal coverage systems, insurance-based systems, and mixed models. It considers primary care strengthening, referral systems, integration of services, and performance management.Attention is given to strategic purchasing, cost-effect
GPH 102: Public Health Intervention Structures
Public health interventions do not operate in isolation. They are embedded within governance systems, financing mechanisms, organisational hierarchies, and policy environments. This chapter examines how interventions are structured, implemented, and sustained across local, national, and international levels.It explores programme design, delivery platforms, intersectoral coordination, regulatory me
GPH 101: Environmental Health Practice
Environmental health practice bridges epidemiology, toxicology, regulation, and risk communication. It addresses how air, water, soil, radiation, chemicals, occupational settings, and the built environment influence population health.This chapter explores exposure assessment, risk assessment frameworks, hazard identification, dose–response relationships, environmental monitoring, and regulatory st
GPH 100: Population Screening
Population screening aims to detect disease before symptoms arise, shifting intervention earlier in the disease pathway. However, screening is not inherently beneficial; it requires careful evaluation of evidence, test accuracy, disease prevalence, and potential harms.This chapter examines principles of screening, including sensitivity, specificity, predictive values, overdiagnosis, lead-time bias
GPH 99: Infectious Disease Control
Infectious disease control remains one of the foundational pillars of public health. From historical epidemics to modern global outbreaks, communicable diseases test surveillance systems, laboratory networks, vaccination programmes, and international cooperation.This chapter explores disease transmission dynamics, reproduction numbers, case definitions, surveillance systems, contact tracing, vacci
GPH 98: NCD Prevention
Non-communicable diseases (NCDs) - including cardiovascular disease, cancer, chronic respiratory disease, and diabetes - are now the leading causes of global mortality. Unlike acute infectious outbreaks, NCDs emerge from long-term exposure to behavioural and environmental risk factors.This chapter explores the epidemiology of NCDs, shared risk factors such as tobacco use, unhealthy diet, physical
GPH 97: Health Needs Assessment
Health needs assessment is a foundational public health function. It bridges epidemiology, ethics, economics, and policy by systematically identifying unmet health needs within populations and guiding strategic planning.This chapter explores epidemiological assessment, patterns of health inequality, demographic profiling, burden of disease analysis, and the equity–efficiency balance in decision-ma
GPH 96: Prisons
Prisons represent closed environments in which existing social and health inequalities are intensified. Incarcerated populations often experience higher rates of mental illness, substance dependence, infectious diseases such as tuberculosis and HIV, chronic disease, and trauma histories.This chapter explores the epidemiology of prison health, including communicable disease transmission in confined
GPH 95: Forced Migrants
Forced migration - including refugees, asylum seekers, and internally displaced persons - represents one of the defining humanitarian and public health challenges of our time. Conflict, political persecution, environmental disaster, and structural instability displace millions globally.This chapter explores the epidemiology of displacement, including infectious disease risk, malnutrition, maternal
GPH 94: Older People
Population ageing is one of the most profound demographic transformations of the 21st century. Increased life expectancy, declining fertility, and improved survival from infectious diseases have expanded the proportion of older people in many societies.This chapter examines longevity trends, compression of morbidity, chronic disease burden, dementia, musculoskeletal disorders, disability, and soci
GPH 93: Disabilities
Disability is not solely a medical condition; it is the interaction between health states and social environments. This chapter explores the epidemiology of disability across the life course, including physical, sensory, intellectual, and psychosocial impairments.It examines ageing-related disability, childhood developmental disability, injury-related impairment, and chronic disease-associated lim
GPH 92: Indigenous Peoples
Across the world, Indigenous peoples experience disproportionately poorer health outcomes compared with non-Indigenous populations. These disparities are not rooted in culture itself, but in colonisation, dispossession, intergenerational trauma, marginalisation, and structural exclusion.This chapter examines life expectancy gaps, chronic disease burden, mental health, suicide, injury, infectious d
GPH 91: Ethnicity and Race
Ethnicity and race are powerful social determinants of health. While race has no biological basis as a rigid genetic category, it has profound social consequences. Structural racism, historical marginalisation, migration patterns, socioeconomic inequality, and differential access to services shape health risks and outcomes across populations.This chapter explores how health disparities arise acros
GPH 90: Adolescent Health
Adolescence represents a dynamic phase of rapid biological, psychological, and social change. While often considered a healthy period of life, it is marked by increased exposure to injuries, violence, substance use, mental health disorders, and sexual and reproductive health risks.This chapter explores adolescent mortality patterns, risk and protective factors, mental health vulnerability, sexual
GPH 89: Child Health
Child health remains a defining indicator of public health performance. While global child mortality has declined significantly in recent decades, preventable deaths from infectious disease, malnutrition, neonatal conditions, and inadequate healthcare access persist in many regions.This chapter explores under-five mortality, neonatal survival, vaccination, acute respiratory infections, diarrhoeal
GPH 88: Women, Men, and Health
Health differences between women and men arise from both biological factors and socially constructed gender norms. This chapter explores how sex-based physiology intersects with gendered expectations, labour roles, risk behaviours, violence exposure, and health-seeking patterns.We examine reproductive health, maternal mortality, occupational risks, mental health, substance use, cardiovascular dise
GPH 87: The Changing Family
Families are foundational social units through which health risks, protection, values, and resources are transmitted. Yet family structures are not static. Declining fertility, delayed parenthood, increased life expectancy, urbanisation, migration, and changing gender norms have transformed households across the globe.This chapter explores trends such as single-parent families, dual-income househo
GPH 86: Urban Health
Urbanisation is one of the defining demographic shifts of the modern era. Cities concentrate opportunity, innovation, healthcare, and economic growth - yet they also amplify inequality, environmental exposure, injury risk, communicable disease transmission, and chronic disease burden.This chapter examines the determinants of health within urban environments: housing quality, sanitation, transport
GPH 85: War
War reshapes the health of populations at every level. Beyond battlefield deaths, conflict drives displacement, famine, infectious disease outbreaks, environmental contamination, collapse of health systems, and generational trauma.This chapter examines the epidemiology of armed conflict, including direct mortality, civilian injury, landmines, chemical and biological weapons, and the destruction of
GPH 84: Interpersonal Violence
Interpersonal violence is a major contributor to premature mortality, disability, and psychological trauma worldwide. This chapter approaches violence through an epidemiological and structural lens, examining how violence emerges from intersecting risk factors across the individual, relational, community, and societal levels.We explore child maltreatment, intimate partner violence, youth violence,
GPH 83: Injury Prevention
Injuries represent one of the leading causes of death and disability globally, particularly among children, adolescents, and young adults. This chapter examines injury through a public health lens: not as isolated events, but as predictable and preventable outcomes shaped by environment, behaviour, policy, and systems.We explore the epidemiology of injuries - road traffic incidents, falls, drownin
GPH 82: Alcohol
Alcohol is deeply embedded in many cultures, economies, and social rituals - yet it remains a major contributor to global morbidity and mortality. Harmful alcohol use is associated with liver disease, cancers, cardiovascular conditions, injuries, violence, mental health disorders, and social disruption.This episode examines:• Global patterns of alcohol consumption• Per capita intake and regional v
GPH 81: Public Health Aspects of Illicit Psychoactive Drug Use
Illicit psychoactive drug use is a significant contributor to global morbidity and mortality. Although its overall burden is smaller than that attributable to tobacco or alcohol, illicit drug use generates substantial health, social, and economic consequences - including overdose deaths, infectious disease transmission, mental health disorders, and social disruption.This episode explores:• Global
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