When did Elvis health decline?

Answer 1

Elvis' health declined for two main reasons. First and foremost his drug addictions caused several major, chronic health problems. Secondly his eating habits were probably as bad as they could have been. These two reasons combined to cause a steady decline in his health, accompained by painful symptoms, ie, colon impaction, etc. This process started as early as 1961, and became completely out of control by 1973/74.