Determinants of health for young people: individual factors (knowledge and skills, attitudes), sociocultural factors (family, peers, media, religion, culture), socioeconomic factors (employment, education, income), environmental factors (geographic location, access to health services and technology)

The health of young Australians is shaped by a layered set of factors. Individual choices matter, but those choices happen inside family, peer, school, online, and structural contexts that push them in particular directions. The syllabus expects you to categorise determinants into four groups and explain how each shapes youth health.

Individual factors

Knowledge, skills, attitudes, behaviour, biological factors, and personality. These are the proximate causes of health behaviour - what the young person actually does.

Health knowledge and literacy

Whether a young person knows what they should do (limit alcohol, attend cervical screening, use sun protection, recognise the signs of depression). School PDHPE is the largest single source for many young Australians. Health literacy is not the same as motivation - knowing what to do is necessary but not sufficient.

Skills

Practical capability to act on knowledge. Negotiation skills for safer sex, refusal skills around peer pressure, communication skills for help-seeking, cooking skills for healthy eating, exercise self-management. Skills are taught through practice, not lecture.

Attitudes and values

What the young person believes about health behaviours. Attitudes are shaped over years by family modelling, peer influence, media exposure, and personal experience. Changing attitudes is harder than changing knowledge.

Personality

Risk tolerance, impulsivity, conscientiousness, optimism. Largely stable but interacts with all the other factors.

Biological factors

Genetic predispositions, sex, age. Non-modifiable at the individual level but relevant context for risk.

Sociocultural factors

The relationships and cultural environment around the young person.

Family

The single most influential factor for most young Australians. Parental modelling of health behaviours (smoking, drinking, exercise, diet, help-seeking) predicts the young person's behaviour better than school-based education alone. Family connectedness is consistently the strongest protective factor against mental illness, substance use, and risky behaviour in the AIHW Australia's Children and Australia's Youth reports.

Peers

Peer influence rises through adolescence and peaks in late adolescence/early adulthood. Peer pressure can be positive (study habits, sport participation, help-seeking culture) or negative (early drinking, drug use, risk-taking). Friendship quality matters more than friendship quantity for mental health outcomes.

Media and social media

A determinant the syllabus has expanded significantly in recent years. Image-based platforms (Instagram, TikTok, Snapchat) correlate with body image concerns and disordered eating in young women in particular. Cyberbullying is a documented risk factor for youth mental illness and suicide attempts. Conversely, online communities can be protective for LGBTIQ+ young people and others who lack offline support.

Religion and culture

Cultural and religious community engagement is generally protective for mental health (sense of belonging, intergenerational support, ritual structure). Specific cultures and religions can also create tensions - e.g., around sexual orientation, gender identity, or mental health stigma - that affect specific subgroups of young people.

Socioeconomic factors

The economic and social position of the young person's family and broader environment.

Education

Higher educational attainment correlates with better health outcomes throughout life. Year 12 completion is the threshold most strongly associated with downstream health benefits. School engagement (not just attendance) is a protective factor against mental illness, substance use, and antisocial behaviour.

Employment

Young Australians have the highest unemployment of any age group (roughly double the national average, ABS Labour Force). Employment is protective: it provides routine, income, social contact, identity. Youth unemployment is consistently associated with worse mental health.

Income (household and personal)

Lower-income households experience higher rates of preventable youth health issues - poorer nutrition, higher smoking initiation rates, more housing instability, less access to extracurricular sport. The gap between high- and low-income youth in Australia is widening on several health measures.

Cost of living

Specifically relevant in 2024-2026: rental affordability, food affordability, transport costs. These pressures affect young Australians more than middle-aged Australians because young people earn less and have fewer assets.

Environmental factors

The physical setting and structural environment around the young person.

Geographic location

Rural and remote young Australians have worse health outcomes across most measures - higher injury rates, less access to mental health services, fewer opportunities for organised sport and recreation, longer travel to GPs and specialists. Suicide rates are roughly three times higher in very remote areas compared to major cities.

Access to health services

GP availability, mental health services, dental services, sexual health clinics. Headspace centres have improved access to youth mental health services but remain unevenly distributed. Bulk-billing rates have declined nationally, raising the gap-fee barrier for low-income young people.

Access to technology

Internet access, devices, and digital literacy. Telehealth has expanded reach for some young people but also widened the digital divide. Online learning during COVID exposed both the benefits and the limits of technology-mediated education.

Built environment

Housing quality (overcrowding affects mental health, sleep, and infectious disease transmission), safe physical activity options (parks, footpaths, cycleways, sports facilities), and proximity to schools and community resources.

Climate and natural environment

Bushfire, flood, and drought exposure correlate with worse mental health outcomes in young people who experience them. Climate change has become a documented source of anxiety in young Australians (Mission Australia Youth Survey).

How determinants interact

Determinants rarely operate alone. A young person in a remote town with low family income, limited GP access, and a family history of mental illness experiences the compound effect of all four categories. Health promotion that addresses only one category (e.g., school PDHPE on mental health) will not move outcomes much if the others are pushing against it.

This is why HSC extended responses on youth health work best when they trace specific issues through the layered determinants rather than listing factors abstractly. A strong response on youth mental health, for instance, walks the marker through individual (skills, knowledge), sociocultural (family, peers, social media), socioeconomic (school engagement, household stress), and environmental (service access, housing) factors.