Living with untreated AIDS is devastating. Patients often suffer from terrible lesions, pneumonia, and nausea; become emaciated; have seizures; and eventually die. The first chapter argues that there should be an enforceable legal human right to health that includes a right to access essential medicines to treat diseases like AIDS. The chapter does not provide a complete account of the right’s basis; the right may also have to protect our basic equality and dignity, for instance. Nevertheless, it argues that health is necessary for, and partly constitutive of, a minimally good life. Lack of access to essential medicines characteristically undermines individuals’ ability to live such lives. So people should have a human right to health that grounds rights to access essential medicines.