Also known as mercy killing, euthanasia refers to the practice or act of painlessly killing individuals suffering from painful and incurable conditions through withdrawing artificial life-support systems or withholding treatments. Currently, most countries lack euthanasia’s provisions in their legal systems. Therefore, the practice or act is usually treated as either murder when performed by another person or suicide, if performed by the patient himself or herself. Usually, euthanasia takes two forms, involuntary and non-voluntary. While voluntary euthanasia involves termination of a patient’s life following his or her express request, in a non-voluntary type, the patient usually is not in a position to express himself or herself. Therefore, the decision to terminate the patient’s life is made by the patient’s doctor