Disease is an expiation of the sins. Every sin is a disobedience to God. The sins involve the evil jinn (demons). When a person commits the sin, a black spot appears on his heart. If he repents, asks for the forgiveness, gives up with the sins, restores the people's rights and honor, who were wronged, and follows the Qur'an and Sunnah, Almighty Allah will purify his heart. But, if a person continues with the sins, his heart will become black and he will be doomed. “…Indeed, there is in the body a piece of flesh which if it is sound then the whole body is sound, and if it is corrupt then the whole body is corrupt. It is the heart." (Bukhari) "Unquestionably, by the remembrance of Allah hearts are assured." (Qur'an, Ar-R'ad 13:28) Sins remove God's blessings: life, health, fertility, wealth, provisions, knowledge, memory... Refraining from the sins is more important than performing good deeds. "Whatever is good is from Allah, while evil and sin are from ourselves and satan" (Fatwas of Ibn Baz) The only one God, Allah, the Creator of the heavens and earth and everything between, seen and unseen, sent the Noble Qur'an and His last messenger to all mankind, as a healing for what is in the breasts and guidance and mercy, and warning about the day of judgment and hellfire. "No calamity has descended except by disobedience, and no calamity is repelled except by repentance." (Ali Ibn Abi Talib) "Know, for certain, that when you break no one will heal you except you." (Ibn Al-Qayyim) More than 90% of the diseases are caused by the evil jinn, but doctors have no knowledge. Healthcare needs serious reform as went astray, instead of healing, it contributes to the progression of the disease and death, as it excites the hidden evil jinn and excited jinn spread more the disease. Satan can be cast out only by Ruqya and Negative Ions; both in the Noble Qur'an. The Ultimate Cure from all diseases is with Almighty God: Ruqya, Negative Ions and Prophetic Medicine. "Whoever abandons the Qur'an would abandon treating sickness and seeking healing through it." (Ibn Al-Qayyim).