Advance Care Directive for Young Adults in NSW: Why Age 18 Is Not Too Early

The Legal Reality at 18

The moment you turn 18 in NSW, your parents lose automatic authority to make medical decisions on your behalf. There is no legal mechanism in NSW that grants parents ongoing healthcare decision-making rights for adult children — regardless of whether that child is 18 or 38, living at home or living independently.

If a 19-year-old is in a car accident and arrives at a Sydney hospital unconscious, the treating team does not simply defer to the parents. They follow the "Person Responsible" hierarchy under the Guardianship Act 1987: spouse or de facto partner first, then unpaid carer, then close relative or friend. For a young adult without a partner or a formally appointed Enduring Guardian, this hierarchy often defaults to a parent — but only if the hospital can identify and contact them, and only if there is no dispute among family members about who should decide.

An Enduring Guardian appointment eliminates this ambiguity. You choose who makes decisions, and that choice is legally binding.

Scenarios Where Young Adults Need an ACD

Advance care planning is not only for the elderly or terminally ill. Several scenarios make it immediately relevant for people in their 20s and 30s:

Elective surgery. Any procedure requiring general anaesthesia carries a small but real risk of complications. An ACD documents your treatment preferences if something goes wrong — if you suffer an anoxic brain injury during surgery and cannot communicate, your directive tells the treating team whether you want life support, and for how long.

Adventure travel and high-risk activities. Skiing, scuba diving, rock climbing, motorcycle touring, overseas travel to remote areas — activities common among young adults that carry genuine injury risk. If you are injured in a remote location and evacuated to a hospital, your ACD and Enduring Guardian appointment ensure your treatment preferences are documented and someone you trust has legal authority.

Military service or emergency services work. Occupations with elevated physical risk make advance care planning a practical necessity, not an abstract exercise.

Chronic health conditions. Young adults living with epilepsy, type 1 diabetes, severe asthma, or congenital heart conditions face a higher probability of medical emergencies. An ACD tailored to their specific condition — with instructions that reference their diagnosis and likely complications — is significantly more useful than a generic template.

Mental health considerations. Young adults experiencing severe mental health conditions may want to document treatment preferences for psychiatric crisis situations, including preferences about involuntary treatment, electroconvulsive therapy, or specific medication protocols.

What a Young Adult's ACD Should Cover

A young adult's ACD will look different from one written by an 80-year-old with terminal cancer. The clinical scenarios are different, and the treatment preferences are usually different too.

Short-term life support. Most young adults would want aggressive treatment for a reversible condition — a traumatic injury, an infection, a surgical complication. Your ACD can specify: "I consent to mechanical ventilation and ICU care for any potentially reversible condition. I refuse long-term life support if two independent specialists confirm that I have suffered irreversible loss of consciousness or will never regain meaningful cognitive function."

Time-limited trial. Rather than an all-or-nothing approach to life support, many young adults prefer a trial period: "I consent to a 14-day trial of intensive care for any acute condition. If at the end of that period my treating team confirms no meaningful neurological recovery is expected, I direct that life-sustaining treatment be withdrawn and comfort care be provided."

Organ donation. Young adults are often strong candidates for organ and tissue donation. Include a clear statement of your donation preferences, and register on the Australian Organ Donor Register through your Medicare account. If you refuse certain life-prolonging treatments, add a carve-out for short-term ventilation solely to facilitate organ donation if you are a suitable donor.

Enduring Guardian appointment. Appoint someone — a parent, partner, sibling, or close friend — who understands your values and will advocate for your wishes. Without this appointment, the hospital must work through the "Person Responsible" hierarchy, which can cause delays, family disputes, and decisions made by people who do not know what you would want.

The "I'm Too Young for This" Objection

The resistance is understandable. At 25, death feels remote. But advance care planning is not about expecting to die — it is about maintaining control over medical decisions if you temporarily or permanently lose the ability to make them yourself.

Consider the alternative: you are in a serious car accident. You are in a coma. Your parents disagree about treatment. Your mother wants everything done. Your father thinks you would not want to be on life support indefinitely. There is no ACD, no Enduring Guardian. The hospital cannot resolve the dispute and must apply to NCAT's Guardianship Division. NCAT proceedings take months. During those months, you are on life support in an ICU while your family tears itself apart.

An ACD and Enduring Guardian appointment drafted over a single afternoon prevent that entire scenario.

How to Set It Up

The process is the same regardless of age:

1. Write your ACD. Document your treatment preferences for specific clinical scenarios. Use clinical language — name the treatments you refuse and the circumstances.

2. Appoint an Enduring Guardian. Complete the statutory form under the Guardianship Act 1987. Discuss your preferences thoroughly with your chosen guardian so they can advocate effectively.

3. Get it witnessed. The ACD does not legally require a witness (though having one strengthens it). The Enduring Guardian appointment must be witnessed by a prescribed witness — a solicitor, Local Court Registrar, or approved NSW Trustee & Guardian employee.

4. Distribute copies. Upload to My Health Record, give copies to your guardian and GP, carry an emergency wallet card.

5. Review when life changes. Marriage, divorce, a new diagnosis, a new child, a change in your relationship with your guardian — any of these trigger a review of your documents.

The New South Wales Advance Directive & Living Will Kit includes clinical scenario templates tailored to different life stages — not just end-of-life situations, but traumatic injury, surgical complications, and acute medical emergencies that matter most for younger adults establishing their first advance care plan.

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