Medicinal Food on the Sabbath

The rabbis generally discourage engaging in healing practices on the Sabbath, perhaps owing to a concern that healing is associated with activities and tasks that are prohibited. As mentioned in b. Shabbat 53b, medication is barred specifically to avoid the possibility of grinding (one of the thirty-nine basic prohibited activities), presumably as part of the preparation of the medicine. This is in tension with a rabbinic requirement to preserve human life; a treatment that may save a life would immediately go from being prohibited to being mandated. The rabbis are seen to balance these considerations as they consider various medical practices and conditions to determine which are allowed on the Sabbath and which are prohibited. As a result, conditions that may be healed on the Sabbath are generally assumed to be understood as life threatening.