Since health conditions will reach their ideal levels during the period of Hazrat Mahdi (atfs) diseases will decrease; only a few individuals will be afflicted with sickness. Medical science will also reach its height and diverse sicknesses will be cured within a very short period of time. In addition to that, with the help of God, the Imam (atfs) himself will cure the incurable. In fact, it can be said that no ailment would be found during his rule.
Regarding the government of al-Mahdi (atfs), Imam Husayn (a.s) said: “No blind, paralytic or sick person will remain on the surface of the earth without being cured by God.” The Commander of the Faithful (a.s) said: “Then, our Qa’im who would then be in the state of occultation will appear with Jibra’il before him and the Book of God behind him. He will cure those who would be suffering from leprosy.” It can be inferred from this tradition that Hazrat Mahdi (atfs) himself will play a key role in curing the incurable diseases. Imam Sadiq (a.s) said: “When our Qa’im rises up, God will keep the believers away from diseases”.
In this regard, Imam Baqir (a.s) said: “Anyone who happens to see the Qa’im from amongst us, will be cured if they had an ailment. If one suffered from weakness; shall become strong and energetic. It has thus been stated in Shaykh Saduq’s Khisal: “During Imam’s (atfs) time, diseases will be cured and the faithful will become strong like iron.