No person, physician, or health care provider in the State of West Virginia shall participate in the practice of medically assisted suicide, euthanasia, or mercy killing of a person. Nothing in this section prohibits the administration or prescription of medication for the purpose of alleviating pain or discomfort while the patient's condition follows its natural course; nor does anything in this section prohibit the withholding or withdrawing of life-sustaining treatment, as requested by the patient or the patient's decision-maker, in accordance with State law. Further, nothing in this section prevents the State from providing capital punishment.