Christ is Enough I am to obey and serve God with gladness of heart. But that is not a pre-requisite for my freedom from the Old Testaments curse. I don't always measure up, and yet that does not negate the fact that He hath redeemed me from the curse of the law. My health does not come from eating nutritious food or taking vitamins. And my health definitely does not come from a yearly doctor visit.
Divine health comes from a divine source.
I will not limit God by attributing sickness or health to the above conditions. He is over all. It is finished. I am living the New Covenant which made all this possible by the blood of Jesus Christ. And if my faith is weak, I cannot blame God.