What factors explain differences in health and human development between countries?
Factors that contribute to similarities and differences in health status and human development between low-, middle- and high-income countries, including access to safe water, sanitation, poverty, gender equality, education, food security, conflict and global marketing
VCE HHD Unit 4 AoS 1 guide to the factors that contribute to similarities and differences in health status and human development between low-, middle- and high-income countries.
Reviewed by: AI editorial process; not yet individually human-reviewed
Have a quick question? Jump to the Q&A page
What this dot point is asking
This dot point asks you to explain the factors that cause health status and human development to differ between low-, middle- and high-income countries, using specific examples. You must be able to name a factor, explain the mechanism by which it affects health, and connect it to outcomes such as mortality, life expectancy or HDI. These factors are the backbone of nearly every Unit 4 extended-response question.
Access to safe water and sanitation
In many low-income countries, large numbers of people lack safe drinking water and adequate sanitation. Contaminated water spreads diarrhoeal diseases such as cholera and typhoid, which are leading killers of young children. Poor sanitation and unsafe water raise infant and under-five mortality and lower life expectancy. High-income countries have near-universal safe water, removing this burden.
Poverty
Poverty is both a cause and a consequence of poor health. People in poverty cannot afford nutritious food, healthcare, schooling or safe housing, leading to a cycle where ill health reduces the ability to earn, deepening poverty. Poverty underlies many other factors on this list.
Food security
Food security means reliable access to enough safe, nutritious food. Food insecurity causes undernutrition, stunting and weakened immunity in low-income countries, while changing diets in middle-income countries fuel rising obesity and chronic disease. Both undernutrition and overnutrition harm health and human development.
Education and gender equality
Education, especially of girls and women, is one of the strongest drivers of better health. Educated women marry later, have fewer and healthier children, use health services more and earn more. Gender equality - women having the same opportunities, rights and freedoms as men - improves family health, empowers decision-making and lifts whole communities. Where girls are denied schooling, health and human development lag.
Access to healthcare
Strong health systems with enough trained workers, medicines, immunisation and maternal care reduce death and disease. Low-income countries often have few doctors, limited immunisation coverage and high out-of-pocket costs, so preventable and treatable conditions go unmanaged, raising mortality.
Conflict and political stability
War and conflict destroy infrastructure, displace people, disrupt food supplies and health services, and cause injury, death and trauma. Countries affected by conflict tend to have far poorer health status and human development, while stable governance allows investment in health and education.
Global marketing and trade
The global marketing of products such as tobacco, alcohol and energy-dense processed foods, often targeted at middle- and low-income countries with weaker regulation, drives rising rates of chronic disease. Increased world trade spreads both helpful goods (medicines, technology) and harmful ones.
Putting factors together
These factors interact. Poverty limits access to clean water, food and education; lack of education entrenches poverty; conflict worsens all of them. Strong global answers show these links rather than listing factors in isolation.
In the exam, choose factors that match the country or data given, explain each mechanism, and link to specific indicators or HDI components.
Exam-style practice questions
Practice questions written in the style of VCAA exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
2022 VCAA4 marksAccording to the WHO, more than 80% of the world's 1.3 billion tobacco users live in low-income and middle-income countries. Explain how the global marketing of tobacco in low-income and middle-income countries may influence burden of disease. (4 marks)
Show worked answer →
Four marks: build a clear chain from global marketing to a higher burden of disease, with two or more linked steps.
Aggressive global marketing (advertising, sponsorship, cheap prices and weak regulation) increases the appeal and uptake of tobacco in low-income and middle-income countries, so more people start smoking and smoking rates rise (1 to 2 marks). Higher smoking rates increase rates of tobacco-related diseases such as lung cancer, cardiovascular disease and chronic obstructive pulmonary disease (1 mark). These conditions cause more premature deaths (years of life lost) and more years lived with disability, which increases the burden of disease, measured in DALYs, in these countries (1 mark). Reward an explicit link to burden of disease/DALY.
2023 VCAA2 marks'In 2020, nearly 820 million children did not have basic handwashing facilities at school.' Explain how the lack of access to basic handwashing facilities contributes to the burden of disease for children. (2 marks)
Show worked answer →
Two marks for a two-step explanation linked to burden of disease.
Without handwashing facilities, children cannot wash away pathogens, so infectious and communicable diseases such as diarrhoeal disease and respiratory infections spread more easily (1 mark). These illnesses cause years of healthy life lost through both premature death (YLL) and time spent ill (YLD), increasing the burden of disease (DALYs) for children (1 mark). The clearest answers name a disease and connect it to DALY/burden of disease rather than just saying children "get sick".
2025 VCAA10 marksUsing four sources on water and sanitation and your own knowledge, discuss the ways in which characteristics of high-income and low-income countries may affect access to safe water and sanitation, and how access to safe water and sanitation contributes to differences in health status between high-income and low-income countries. (excerpt of a 10-mark question)
Show worked answer →
This is part of a criteria-marked 10-mark extended response. Address both bullets using the data and your own knowledge.
Characteristics affecting access (about half the marks): Low-income countries have lower incomes, weaker infrastructure, less government revenue and (as Source 4 shows) sometimes conflict, so they cannot build or maintain piped water and sewerage, leaving many people without safely managed water and sanitation. High-income countries have the wealth, stable governments and infrastructure to provide near-universal access, as the graphs in Sources 1 and 2 show.
Effect on health status (about half the marks): Lack of safe water and sanitation spreads waterborne and diarrhoeal disease (Source 3 notes nearly 1.7 billion cases of childhood diarrhoeal disease a year), raising morbidity, child mortality and burden of disease in low-income countries, while high-income countries with good access have far lower rates, explaining differences in life expectancy and under-5 mortality between the two groups.