Can a Health and Welfare attorney make end-of-life decisions for me?

Only if you specifically gave them that authority in section 5 of the LP1H. By default, Health and Welfare attorneys can make decisions about routine medical treatment, but cannot make decisions about refusing or stopping life-sustaining treatment. To give them that power, you tick the "I want to give my attorneys authority to give or refuse consent to life-sustaining treatment" box. This is one of the most serious decisions in the form. If you don't tick that box, decisions about life-sustaining treatment fall to doctors acting in your best interests (or to an Advance Decision document you've made separately). We always have a careful conversation about this section before you sign — it's not a tickbox to rush.