VCE Health & Human Development (Year 12) · Global Health and Sustainability · 20m read

Global Health — Patterns and Priorities

A child born in Japan can expect to live to 84, while a child born in Sierra Leone averages 55 years. You'll explore what creates these stark differences in health outcomes between wealthy and low-income countries, and discover which global health challenges deserve urgent attention. This matters because it shapes policy decisions that affect billions of people and your future role as a global citizen.

Learning objective: Compare health status between high-, middle- and low-income countries and evaluate key global health priorities.

By the end of this lesson you can:

• I can compare health indicators between high- and low-income countries.
• I can explain the epidemiological transition.
• I can evaluate the role of the UN Sustainable Development Goals in global health.

Global health patterns are a world heat map. Colour the map by life expectancy or child mortality and stark contrasts appear between high- and low-income countries.

Global health patterns — the North-South divide

### Burden of disease globally

Health status varies dramatically across income groups:

| Indicator | High-income | Low-income |
|-----------|-------------|------------|
| Life expectancy | 80-85+ years | 55-65 years |
| Infant mortality | <5 per 1,000 | 50-100+ per 1,000 |
| DALY sources | NCDs (chronic disease) | Infectious disease, maternal/child |
| Healthcare spending | $3,000-12,000/person/yr | $30-200/person/yr |
| Healthcare workforce | High (10+ per 1,000) | Very low (<1 per 1,000) |

### Epidemiological transition

Countries move through stages as they develop economically:

Stage 1 (low-income): Infectious disease dominates
- High child mortality from diarrhoea, pneumonia, malaria, measles
- Malnutrition compounds all other conditions
- Short life expectancy

Stage 2 (middle-income): Transitioning
- Infectious disease declining (vaccination, sanitation improving)
- Non-communicable diseases (NCDs) emerging
- "Double burden" — both types simultaneously

Stage 3 (high-income): NCDs dominate
- Cardiovascular disease, cancer, diabetes, mental health as leading burdens
- Ageing population → dementia, arthritis, cancer increasing

### Leading causes of death globally (WHO 2024)

Globally: Ischaemic heart disease, stroke, lower respiratory infections, COPD, newborn conditions, lung cancer.

Low-income countries top killers: Lower respiratory infections (pneumonia), diarrhoeal disease, HIV/AIDS, malaria, neonatal conditions, tuberculosis.

### The UN Sustainable Development Goals (SDGs)

17 goals adopted by all 193 UN members in 2015, targeting 2030. Health-relevant goals:

• SDG 3: Good Health and Well-Being — universal health coverage, reduce maternal/child mortality, fight communicable diseases
• SDG 2: Zero Hunger — undernutrition, food security
• SDG 6: Clean Water and Sanitation — fundamental for reducing infectious disease
• SDG 10: Reduced Inequalities — within and between countries
• SDG 1: No Poverty — poverty is the root cause of most preventable health conditions

### Role of WHO

The World Health Organization coordinates international health responses, sets global health standards, monitors disease outbreaks, and leads campaigns (eradication of polio, COVID-19 coordination).

### Factors explaining global health inequality

• Economic inequality — income determines access to food, water, housing and healthcare
• Colonial legacy — colonialism extracted wealth, destroyed health systems, created dependency
• Climate and geography — tropical disease burden, flood/drought vulnerability
• Political instability — conflict destroys health infrastructure
• Global trade rules — pharmaceutical patent protection makes medicines unaffordable in poor countries

Key ideas at a glance

• Compare indicators: Life expectancy, mortality.
• Burden of disease: DALYs.
• Determinants: Income, sanitation.
• Trends: Improving or not.

Worked example (Medium)

Explain the "double burden of disease" and why it presents a challenge for middle-income countries.

1. Define double burden. The double burden refers to a country simultaneously experiencing high rates of both infectious diseases (typically associated with poverty and low sanitation) AND non-communicable diseases (typically associated with urbanisation, dietary change, and ageing populations).
2. Why it occurs in middle-income countries. As countries develop economically, infectious disease rates decline as sanitation, immunisation and nutrition improve. However, urbanisation also brings changes: more sedentary lifestyles, greater access to processed food, increased tobacco and alcohol consumption. This creates NCDs before infectious diseases are fully controlled.
3. The challenge. Health systems must simultaneously manage infrastructure for infectious disease control (vaccination, primary healthcare, water/sanitation) AND the chronic disease management infrastructure needed for NCDs (long-term medication management, specialist care). With limited budgets, this is extremely challenging — resource allocation becomes highly contested.

Answer: The double burden places unrealistic demands on limited health systems — they must fight two very different disease categories simultaneously, requiring both public health infrastructure and chronic disease management capabilities.

Worked example (Hard)

Evaluate the effectiveness of the Sustainable Development Goals (SDGs) in addressing global health inequalities compared to the Millennium Development Goals (MDGs).

1. MDG achievements and limitations. The MDGs (2000–2015) achieved significant health gains: under-5 mortality fell by 53%, extreme poverty halved, HIV infections fell 40%, malaria deaths fell 60%. However, MDGs used national averages that masked within-country inequalities, completely ignored NCDs (now 74% of global deaths), and applied only to developing countries — as if health inequalities were a "developing world" problem.
2. SDG improvements. The SDGs (2015–2030) addressed MDG shortcomings: universal application (all countries, including Australia); explicit NCD targets (SDG 3.4); mental health inclusion; "leave no one behind" equity principle requiring disaggregated data by income, gender, location; interconnected goals recognising that health depends on poverty (SDG 1), education (SDG 4), water (SDG 6), and inequality (SDG 10).
3. SDG challenges. The SDGs' ambition is also a weakness: 17 goals with 169 targets are difficult to measure, fund, and prioritise. COVID-19 reversed progress on multiple indicators — global extreme poverty rose for the first time in 20 years. Financing gap estimated at $4.2 trillion/year. Most low-income countries are not on track for any health-related target by 2030.
4. Evaluation. The SDGs represent a conceptually superior framework — broader, more equitable, more interconnected. But conceptual superiority does not guarantee implementation success. Without enforcement mechanisms, adequate financing, and genuine political commitment, the SDGs risk being aspirational rather than transformational.

Answer: The SDGs are a more comprehensive and equitable framework than the MDGs, but face greater implementation challenges due to their ambition, financing gaps, and the COVID-19 setback. Conceptual improvement has not yet translated into proportional outcome improvement.

Common mistakes

• Using the term "third world" or framing low-income countries as simply "behind" This is ethnocentric and historically inaccurate. Low-income country health status is shaped by colonialism, unfair trade rules, and structural global inequality — not by being at an earlier point on a universal development path. Fix: Use correct terminology (low-income, middle-income, high-income countries — World Bank classification) and acknowledge structural causes: "Global health inequalities are produced by historical exploitation, ongoing trade inequities, and underinvestment — not simply by a development deficit."
• Confusing the epidemiological transition with the demographic transition These are related but distinct models. The demographic transition describes changes in birth and death rates. The epidemiological transition describes the shift in dominant disease patterns from infectious to non-communicable diseases. Fix: Be precise: "The epidemiological transition describes how disease burden shifts from infectious diseases (Stage 1) to NCDs (Stage 3) as countries develop — paralleling but distinct from the demographic transition's focus on birth and death rates."
• Stating that SDG 3 is the only health-related SDG Health outcomes depend on multiple SDGs: poverty (SDG 1), hunger (SDG 2), clean water (SDG 6), education (SDG 4), gender equality (SDG 5), and inequality (SDG 10). Treating health as isolated from these demonstrates weak social determinants understanding. Fix: Reference multiple SDGs: "While SDG 3 directly targets health outcomes, achieving good health requires progress on SDG 1 (poverty), SDG 2 (nutrition), SDG 6 (water/sanitation), and SDG 10 (inequality) — reflecting the interconnected social determinants of health."

The colonial roots of global health inequality

The global health gap between high-income and low-income countries is not natural or inevitable — it was constructed through centuries of colonial exploitation, and its effects persist today.

Colonial health impacts: European colonialism extracted wealth, disrupted indigenous food systems, imposed cash crop monocultures (replacing diverse food production with export commodities like cotton, coffee, and rubber), and destroyed pre-existing health knowledge systems. In India, the British colonial famine mortality was estimated at 35–60 million people, largely caused by diverting food production to export crops while Indian farmers starved.

Post-colonial structural inequality: After independence, former colonies inherited economies structured for resource extraction, not domestic development. Structural Adjustment Programs (SAPs) imposed by the IMF and World Bank in the 1980s–90s required governments to cut public spending — including health and education — as conditions for loans. Many African countries reduced health spending by 50%+ during structural adjustment, with devastating consequences for health infrastructure.

Contemporary mechanisms: Pharmaceutical patent protection (TRIPS agreement) makes essential medicines unaffordable in low-income countries. Multinational corporations use tax avoidance strategies that deprive developing countries of revenue for health systems. "Brain drain" — developed countries recruiting health workers trained at developing-country expense — depletes healthcare capacity. Sub-Saharan Africa loses ~20,000 health professionals annually to OECD countries.

For VCE HHD: Acknowledging these structural causes demonstrates sophisticated analysis. VCAA examiners specifically caution against ethnocentric framing — understanding that global health inequality is produced by systems, not by inherent characteristics of populations, is essential for top-scoring responses.

Practice questions

1. The "epidemiological transition" describes:

   1. The spread of infectious disease across countries
   2. The shift from infectious disease to non-communicable disease dominance as countries develop
   3. The transfer of doctors between high and low income countries
   4. Changes in global vaccination programs

   (1 marks)

2. Explain TWO reasons why low-income countries have higher rates of infectious disease than high-income countries.

   (3 marks)

Summary

• Epidemiological transition: low-income (infectious) → middle (double burden) → high-income (NCDs).
• Key global health gap indicators: life expectancy, IMR, DALY burden, healthcare spending per capita.
• SDGs: 17 goals targeting 2030; SDG3 specifically addresses health equity globally.
• WHO: coordinates global health standards, disease outbreak response, eradication programs.
• Global health inequality explained by: poverty, colonial history, climate, political instability, trade rules.