Arrange a living will as soon as possible after a dementia diagnosis, while the person can still understand and communicate treatment choices. A living will records which emergency and life-sustaining treatments the person would accept or refuse if they later cannot decide. Do not wait for dementia to become advanced. The National Institute on Aging recommends beginning legal and financial planning early because progressive symptoms can make direct participation harder as the disease advances.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- Does a dementia diagnosis affect legal capacity?
- What a living will does—and does not do
- Why a health-care proxy matters
- How to complete and maintain the documents
- When medical orders may also be needed
Does a dementia diagnosis affect legal capacity?
A diagnosis does not automatically remove the person's right or ability to make decisions. Capacity depends on whether the person understands a decision, appreciates its consequences, and can make a rational choice. Capacity may also differ by document and state law.
Someone might be able to complete a living will but struggle with a more complicated legal or financial decision. The Alzheimer's Association advises addressing legal documents while the person can participate and explains that capacity requirements vary. If capacity is uncertain, seek local legal guidance promptly. A clinician may also help describe the person's current ability to understand and communicate health-care preferences.
What a living will does—and does not do
A living will gives future medical instructions for a time when the person cannot speak or decide. It may address emergency care and treatments intended to sustain life. This document is different from a standard will.
A standard will distributes property after death; it does not tell clinicians which medical treatments the person wants during incapacity. A living will also has limits. It cannot anticipate every infection, injury, feeding decision, or other complex situation that might arise during dementia. Clinicians may sometimes be unable to follow an instruction exactly because of the circumstances.
Why a health-care proxy matters
The person should usually name a health-care proxy when completing a living will. This is done through a durable power of attorney for health care and authorizes someone to decide when the person cannot communicate. The proxy can respond to situations the written instructions never anticipated.
The National Institute on Aging describes living wills and health-care powers of attorney as distinct types of advance directives with complementary roles. Choose someone who understands the person's values and is willing to carry them out. Discuss likely dementia-related choices with that person and the care team, including what quality of life and burdens of treatment mean to the individual.
How to complete and maintain the documents
Living-will forms and signing requirements can differ by state. Some states require particular forms, witnesses, or other formalities, so use the applicable state document or seek local legal help.
The Alzheimer's Association notes that advance directives must meet the person's state requirements. A practical process is: During each review, confirm that the named proxy remains available and that the instructions still reflect the person's wishes. Make updated copies easy for the care team and family to find.
- Discuss treatment goals while the person can express personal preferences.
- Complete the living will and health-care proxy documents.
- Follow all applicable signing and witnessing instructions.
- Give copies to the proxy, clinicians, and trusted family members.
- Keep an accessible copy rather than placing the only version in secure storage.
When medical orders may also be needed
A living will may not provide immediate instructions for emergency professionals. If the person is seriously ill or approaching the end of life, ask a clinician whether POLST or MOLST medical orders are appropriate.
These orders do not replace advance planning. They can translate current treatment choices into medical orders that professionals can act on during an emergency.
