* θεραπεία (therapeia): This is probably the closest and most common translation. It encompasses treatment, healing, and cure, and is often used in the context of medical treatment.
* ίασις (iasis): This refers more specifically to the *process* of healing or recovery, the act of being cured.
* ἀποκατάστασις (apokatastasis): This word implies a restoration to a former state of health, a complete cure.
Therefore, the best choice depends on the specific situation. θεραπεία (therapeia) is generally a safe and accurate translation in most cases.