I do not think this is off topic for this thread, because it addresses the original poster's concern, but I've said enough. I never said that what someone eats didn't affect their health. The point is, believing and acting on what God said is what brings good health. What one eats may or may not be helpful to his health. I do not see a reference to a dietary plan in the following verses. Why would you not trust God for good health?
Worship the LORD your God, and his blessing will be on your food and water. I will take away sickness from among you, (Exodus 23:25, 1984 NIV)
“Honor your father and your mother, as the LORD your God has commanded you, so that you may live long and that it may go well with you in the land the LORD your God is giving you. (Deuteronomy 5:16, 1984 NIV)
Trust in the LORD with all your heart and lean not on your own understanding; in all your ways acknowledge him, and he will make your paths straight. Do not be wise in your own eyes; fear the LORD and shun evil. This will bring health to your body and nourishment to your bones. (Proverbs 3:5-8, 1984 NIV)
Pleasant words are a honeycomb, sweet to the soul and healing to the bones. (Proverbs 16:24, 1984 NIV)
Because of your wrath there is no health in my body; my bones have no soundness because of my sin. ... My wounds fester and are loathsome because of my sinful folly. ... My back is filled with searing pain; there is no health in my body. (Psalms 38:7, 1984 NIV) (Psalms 38:3, 5, 7 1984 NIV)
Therefore, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of sinning against the body and blood of the Lord. ... For anyone who eats and drinks without recognizing the body of the Lord eats and drinks judgment on himself. That is why many among you are weak and sick, and a number of you have fallen asleep. (1 Corinthians 11:27, 29-30, 1984 NIV)
My son, pay attention to what I say; listen closely to my words. Do not let them out of your sight, keep them within your heart; for they are life to those who find them and health to a man’s whole body. (Proverbs 4:20-22, 1984 NIV)
Therefore, take care to follow the commands, decrees and laws I give you today. If you pay attention to these laws and are careful to follow them, then the LORD your God will keep his covenant of love with you, as he swore to your forefathers. He will ... ... none of your men or women will be childless, nor any of your livestock without young. The LORD will keep you free from every disease. He will not inflict on you the horrible diseases you knew in Egypt, but he will inflict them on all who hate you. (Deuteronomy 7:11-15, 1984 NIV)
“Is not this the kind of fasting I have chosen: to loose the chains of injustice and untie the cords of the yoke, to set the oppressed free and break every yoke? Is it not to share your food with the hungry and to provide the poor wanderer with shelter—when you see the naked, to clothe him, and not to turn away from your own flesh and blood? Then your light will break forth like the dawn, and your healing will quickly appear; then your righteousness will go before you, and the glory of the LORD will be your rear guard. (Isaiah 58:6-8, 1984 NIV)
and a few verses later:
“And the LORD will continually guide you, And satisfy your desire in scorched places, And give strength to your bones; And you will be like a watered garden, And like a spring of water whose waters do not fail. (Isaiah 58:11, 1995 NASB)
But I will restore you to health and heal your wounds,’ declares the LORD, ‘because you are called an outcast, Zion for whom no one cares.’ (Jeremiah 30:17, 1984 NIV)
He said to her, “Daughter, your faith has healed you. Go in peace and be freed from your suffering.” (Mark 5:34, 1984 NIV)
Is any one of you sick? He should call the elders of the church to pray over him and anoint him with oil in the name of the Lord. And the prayer offered in faith will make the sick person well; the Lord will raise him up. If he has sinned, he will be forgiven. Therefore confess your sins to each other and pray for each other so that you may be healed. The prayer of a righteous man is powerful and effective. (James 5:14-16, 1984 NIV)
The tempter came to him and said, “If you are the Son of God, tell these stones to become bread.” Jesus answered, “It is written: ‘Man does not live on bread alone, but on every word that comes from the mouth of God.’’” (Matthew 4:3-4, 1984 NIV)
There are many more passages than just these.