I think it is naïve to think there is a cure for disease. There is no cure. You can fight disease; you can kill disease; you can recover from disease – but you can’t cure it.
How could we? We are open systems. We are systems of inputs and outputs. We are born with certain genetic traits. Each day we breath in air and drink water or other beverages. We choose every day what food to eat, and how much to eat. Can we cure obesity? Again, no. But we can fight it; we can make good choices, we can overcome it. But even if we lost weight, it could always come back. Can we cure cancer? We can beat it, but it could come back, as it often does.
It is similar to the concept of sin. There is no cure for it. We can fight against it and we can be overcomers through Christ. But we will never reach perfection in this life. Instead we press on. We press forward, not looking back.
Not as though I had already attained, either were already perfect: but I follow after, if that I may apprehend that for which also I am apprehended of Christ Jesus. Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before, I press toward the mark for the prize of the high calling of God in Christ Jesus. –Philippians 3:12-14
There is no cure, but there is victory. There is no cure, but there is overcoming. There is Christ, who overcame all things for us, and is our example going forward, and by continual refreshing of the Holy Spirit. As Paul did, we should run that we might win.
Know ye not that they which run in a race run all, but one receiveth the prize? So run, that ye may obtain. And every man that striveth for the mastery is temperate in all things. Now they do it to obtain a corruptible crown; but we an incorruptible. I therefore so run, not as uncertainly; so fight I, not as one that beateth the air: But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway. –I Corinthians 9:24-27
And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death. –Revelation 12:11