Advance directives are legal documents that allow individuals to outline their preferences for medical treatment in case they become unable to communicate their wishes. These directives can specify the types of medical interventions a person does or does not want, such as life support or resuscitation efforts. They help ensure that a person's healthcare choices are respected, even when they cannot speak for themselves. There are two main types of advance directives: a living will and a durable power of attorney for healthcare. A living will details specific medical treatments a person wishes to receive or avoid, while a durable power of attorney designates someone to make healthcare decisions on their behalf.