Entrust your health to God.

 Entrust your health to God. If your illness or the doctor imposes something on you, accept it with the hope that through it God will accomplish what He wants. Of course, our self-denial should not lead us to death (which would be suicide ), nor should we have so much attentive care that it leads to self-love, but we should walk the middle road—that is, in faith we should do what is prescribed so that it is not considered to be suicide.

 But as to whether or not we shall get well through the means we use, in faith we leave this up to God. My child, have patience in all your sufferings. Illnesses provide great benefit to the soul when we endure them, as long as we blame ourselves for them, since we suffer from them primarily on account of our sins, and especially on account of our pride of heart.

Elder Ephraim of Arizona 

Counsels from the Holy Mountain
On Illness