"O Mankind: There has come to you a direction from your Lord and a healing for the (disease) in your hearts - and for those who believe a guidance and mercy!" (Quran 10:57)
All doctors treat, but a good doctor lets nature heal.
Physicians do a lot for a patient when they give his disease a name.
Quran (7:31)
Eat and drink healthy and be not prodigal.
"And We sent down in the Quran that which is healing and a mercy to those who believe: to the unjust it causes nothing but loss after loss". (Quran 17:82).
"Everything good that happens to you (O Man) is from God, everything bad that happens to you is from your own actions". (Quran 4:79).