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Resource LibraryPower of Attorney

What Is an Advance Directive (and Why Every Adult Needs One)

It is the document that speaks for you when you cannot speak for yourself — about the medical care you do and do not want. Here is what it covers and how to set yours up.

Heritas Team June 13, 2026 5 min read

Most estate planning is about money. This document is about something more personal: the medical care you would want — and would refuse — if you could not speak for yourself. An advance directive is one of the few estate documents that every adult, at any wealth level, should have.

What an advance directive is

An advance directive is a legal document that records your healthcare wishes and names who should make medical decisions for you if you become unable to. It usually has two parts that work together.

1. The living will

A living will states your preferences for medical treatment in serious situations — for example, whether you would want life support, resuscitation, artificial nutrition, or comfort-focused care if you were terminally ill or permanently unconscious. It speaks for you when you cannot.

2. The healthcare proxy (medical power of attorney)

A healthcare proxy names a trusted person — your “agent” — to make medical decisions on your behalf. No document can anticipate every scenario, so this person fills the gaps, guided by your stated wishes.

Why it matters so much

  • It protects your wishes. Without it, doctors and family may default to aggressive intervention you would not have wanted — or fight over what you “would have said.”
  • It spares your family. Making a life-or-death call with no guidance is a burden no one should carry alone. Your directive lifts it.
  • It prevents conflict. Clear instructions and a single named decision-maker stop family disputes at the worst possible time.
  • It applies to everyone. A medical crisis can strike at any age — this is not just for the elderly.

How to set one up

  • Decide your wishes for life-sustaining treatment and end-of-life care.
  • Choose your healthcare agent — someone calm, trustworthy, and able to honor your wishes even under pressure. Name a backup.
  • Complete your state's forms. Requirements (witnesses, notarization) vary by state.
  • Talk to your agent and family so no one is surprised. The conversation matters as much as the paperwork.
  • Make it findable. Give copies to your agent and doctor, and note where the original is.

An advance directive only helps if the people who need it can find it in an emergency. Keep it alongside your other key documents in one organized place your family knows how to reach — the same place your medical and financial information should live.

This article is general educational information, not legal or medical advice. Advance directive laws and forms vary by state. Consult a qualified attorney and your physician.

#advance directive#living will#healthcare proxy#end of life#medical decisions

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