Poverty, food insecurity and social prescribing — branching viva

Viva — Branching structured oral

Stem. A four-year-old girl is brought to your clinic for routine immunisation. Her mother has recently lost her job, the family is behind on rent, and the child's weight has fallen across centiles. The mother asks quietly whether you know anywhere that gives food. [2]

Branch 1 — Classification and framing of material hardship

Examiner: How do you classify this family's hardship, and why frame it as material hardship rather than income poverty alone? [2]

Model answer. I classify hardship by domain and severity. Income poverty measures whether household income falls below a threshold, but the lived experience that becomes biology is material hardship — going without food, stable housing, heating or health care because the household cannot afford them. This family faces food insecurity (the mother's disclosure), housing instability (behind on rent) and, likely, income poverty. Food insecurity is graded marginal, low or very low; this child's faltering growth suggests at least low food security. Framing it as material hardship matters because each domain has a screening tool and a specific intervention, and because income poverty alone misses families whose income sits above the line but who still cannot meet basic needs. [2]

Examiner follow-up: Why is housing instability a separate screening domain? [2]

Model answer. Housing instability — crowding, multiple moves, falling behind on rent, eviction and homelessness — adds a distinct mechanism of harm beyond income. Each move severs routines, sleep, schooling and relationships, and the resulting allostatic load tracks into measurable health and developmental deficit. Eviction in families with very young children is associated with increased hardship, food insecurity and health problems, so housing is a clinical vital sign that I screen for explicitly rather than waiting for it to surface. [2]

Branch 2 — The toxic-stress mechanism

Examiner: Walk me through the mechanism by which this family's hardship is shaping the child's brain. [1]

Model answer. Poverty, food insecurity and housing instability accumulate as adverse childhood experiences that act through a toxic-stress mechanism. The stress response — the HPA axis, immune signalling and neurodevelopment — is persistently activated and dysregulated, so the developing brain is shaped by chronic threat rather than safety. The relationship is dose-responsive: more cumulative deprivation produces more dysregulation, which is why a four-year-old, whose brain is still highly plastic, carries deep developmental risk. Food insecurity contributes through both direct nutritional inadequacy during rapid growth and the chronic psychological stress of household anxiety, and the housing threat adds severed routines and allostatic load. The implication is that reducing the dose — through food security, income support and stable housing — interrupts the cascade and protects the developing brain. [1]

Branch 3 — Universal screening and the Hunger Vital Sign

Examiner: How would you screen this family, and why screen universally rather than only when you suspect hardship? [3]

Model answer. I would screen routinely and destigmatisingly, framing it as universal — "we ask all families these questions because they matter for children's health." For food insecurity I would use the validated two-item Hunger Vital Sign: whether in the past 12 months the family worried food would run out before they had money to buy more, and whether the food bought did not last and there was no money to get more. A "sometimes true" or "often true" to either item is a positive screen. I would add a validated multi-domain social-needs instrument for housing, income, utilities, transport and safety. I screen universally because hardship is common, fluctuating and often invisible, families do not reliably disclose it because of shame, and the harm begins before a child looks undernourished — so waiting for suspicion under-identifies the families who need help most. [3]

Examiner probe: What is the evidence that this screening works? [5]

Model answer. Sokol's 2019 systematic review confirms that screening children for social determinants of health is feasible and acceptable in paediatric settings and identifies unmet need that would otherwise be missed. The Hunger Vital Sign itself was validated by Hager and colleagues in 2010 and has been adopted across paediatric primary care because it is brief, sensitive and acceptable to families. The evidence supports universal routine screening as the standard of care. [5]

Branch 4 — The five-step social-prescribing pathway and a diagnostic-overshadowing scenario

Examiner: Outline the social-prescribing pathway you would follow for this family, and tell me how you would avoid diagnostic overshadowing. [6]

Model answer. The five-step pathway is screen, assess, co-design, connect and follow up. Screen identifies the hardship; assess clarifies the severity, drivers and any organic or safeguarding concern; co-design asks the family what they need and will accept, respecting autonomy; connect delivers an active referral to food programs, income maximisation, welfare rights and community support, ideally through a link worker who bridges the clinic and the community; and follow up checks the referral worked, measures whether the hardship resolved, and advocates at the policy level. To avoid diagnostic overshadowing, I would never assume the child's faltering growth is "just social" until I have investigated and excluded organic disease — I would check a full blood count and iron studies, take a full dietary and feeding history, arrange a developmental screen, and treat any organic cause in parallel with the social-prescribing response, because the two coexist and reinforce each other. [6]

Examiner follow-up: During the assessment you suspect severe, persistent neglect arising from the family's circumstances. What do you do? [2]

Model answer. Material hardship is not neglect, but severe, persistent unmet need that endangers a child crosses into safeguarding territory. I would clarify the concern, document the findings, and share the minimum necessary and lawful information with child-protection services, treating under best interests while I clarify the legal authority. I would involve social work and the family, be transparent about what I must share and why, and coordinate the clinical, social and safeguarding plans so that the response supports rather than punishes the family wherever possible. [2]

Branch 5 — Evidence and policy-level advocacy

Examiner: What is the evidence that intervening on poverty actually changes child outcomes, and how would you advocate? [4]

Model answer. The evidence for reversibility is the strongest part of this topic. Food insecurity in children under four is associated with poorer health and developmental risk, and intervening on food security and income demonstrably improves outcomes. Most powerfully, Copeland and colleagues' 2022 analysis of a natural experiment showed that childhood family income supplements were associated with improved adult functioning, demonstrating that poverty is modifiable and that structural income intervention changes long-term trajectories. I would advocate at three levels: for universal routine social-needs screening embedded in every medical home, for funded link-worker and community-resource infrastructure that makes a positive screen actionable, and for structural policy on income support, housing and food security — using my professional body's advocacy channels, public statements and local systems advocacy to push for the policies that reduce the dose of adversity at its source. [4]