Yes: In "Jewish Medical Directives for Health Care," Rabbi Mackler (editor) notes that both Rabbis Avram Reisner and Elliot Dorff "would allow terminally ill patients to rule out certain treatment options (such as those with significant side effects), to forgo mechanical life support, and to choose hospice care as a treatment option" (Mackler 1993: 2).

Yes. Two sample forms for executing advance directives for health care are modeled in Mackler's "Jewish Medical Directives for Health Care" (1993). One, authored by Rabbi Reisner, is rather restrictive regarding the option of forging artificial nutrition and hydration. The other, authored by Rabbi Dorf (see below), is more liberal. Both forms have been validated by the Committee on Jewish Law and Standards (CJLS 1993: 13).

___ All means of nutrition and hydration should be continued where these are understood to be effective measures for extending my life, even if there is no reasonable hope of my regaining consciousness. I would not want any machines or medications (including antibiotics) used to keep me alive to be withheld or withdrawn.

___ If there is no reasonable hope of my regaining consciousness, I would want to forgo all treatments and interventions extending my life, including artificial provision of nutrition and hydration, which I consider to be medications. If artificial means of providing nutrition and hydration were used during the period in which my diagnosis was being formed and tested, I hereby ask that the feeding tubes (wherever they are attached to my body) be removed once the diagnosis is confirmed, just as other medications and machines which have proven to be ineffective in effecting my cure may be removed.

Citations

Mackler, Aaron L. (ed.). 1993. "Jewish Medical Directives for Health Care," validated by the Committee on Jewish Law and Standards (CJLS) on 10.27.93.