The Right to Refuse Life-Sustaining Treatment

One of the most important and least understood rights in medicine is this: a competent adult can refuse or stop any medical treatment, including treatment that is keeping them alive. This is true in every state, and it is a completely different thing from medical aid in dying. It is not assisted suicide, it is letting a disease take its natural course.

The legal foundation

The right to refuse treatment grows out of two well-settled principles: the common-law right to bodily autonomy and the doctrine of informed consent, which means no one may touch or treat you medically without your agreement. In Cruzan v. Director, Missouri Department of Health (1990), the U.S. Supreme Court recognized that a competent person has a constitutionally protected liberty interest in refusing unwanted medical treatment, including artificial nutrition and hydration.

What you can refuse

The right is broad. A competent patient can decline or discontinue:

• Ventilators and other breathing support.
• Feeding tubes and artificial nutrition and hydration.
• Dialysis.
• CPR and resuscitation (through a DNR order).
• Medications, surgeries, and other interventions, even life-saving ones.

Legally, withholding a treatment and withdrawing one already started are treated the same, so choosing to stop a ventilator is as protected as choosing never to start it.

DNR, DNI, and POLST orders

To make these choices actionable in an emergency, patients use medical orders. A DNR (do not resuscitate) tells providers not to perform CPR; a DNI (do not intubate) declines a breathing tube. A POLST or MOLST form turns your wishes into a portable medical order that emergency responders will follow. These are different from a living will, which is a legal document about future wishes rather than an immediate medical order.

When the patient cannot decide

The right does not disappear when someone loses capacity, but the process changes. If you have an advance directive naming a health-care agent, that person decides based on your stated wishes. Without one, state law designates a surrogate (often a spouse, then adult children). Cruzan allows states to require clear and convincing evidence of what an incapacitated patient would have wanted, which is exactly why putting your wishes in writing matters so much.

Making your refusal stick

Hospitals and doctors generally must honor a valid refusal; a provider with a conscientious objection is expected to transfer your care, not override you. To protect yourself, complete an advance directive, name a health-care proxy, put DNR/POLST orders in place if appropriate, and make sure your doctors and family have copies.

This is general information, not legal or medical advice. For your situation, talk to your physician and consider consulting an attorney about advance-care documents.