There are a lot of Christians and non Christians walking around pointing the finger at the Almighty God for GIVING Cancer and Disease to people. Claiming that his Sovereignty has allowed such things to happen on an intimate and personal basis.
Their view is clouded by the real truth. (Satan would love more than anything for you to view God as an unloving wrathful God just waiting for you to mess up so he can strike you with illness or disease). God is Sovereign and he does control calamity and does (did) allow it to happen. The choice was made thousands of years ago in the Garden with Adam & Eve. He told Adam & Eve that if they ate from the tree of knowledge of Good and Evil they would surely die!
When God gave over choice and free will to man he allowed the consequences of the fall of man kind to be on fault of the humanity. From that point forward he made a choice to allow all things created/done by man to exist on the part of their own free will.
God originally planned and created a "perfect" earth absent of disease and calamity. The sinful desire and nature of man increased in power and the effects and power of SIN sent Earth and Mankind into a state of serious degeneration. What we have now on Earth is a result of the fall of man from the beginning. We are in the shadow of Earths formal and perfect glory. calamity, disaster and the subjection to futility is ours to own and not God's. We are infested with disorder, disease and disaster because of the fall of mankind making us solely accountable for our own condition.
The GREAT news is that God is a loving and forgiving God and we can pray to him to intercede for us and correct in our minds, body and soul what has gone seriously wrong! God is healer and perfector! He is our great physician and we can turn to him for mind, body and spirit healing! We Thank our Lord Jesus Christ for that right!