Let us lay a Biblical Foundation for these health principles... 

1Co 11:20  Therefore when you come together in one place, it is not to eat the Lord's Supper. 
1Co 11:21  For in eating, each one takes his own supper ahead of others; and one is hungry and another is drunk. 
1Co 11:22  What! Do you not have houses to eat and drink in? Or do you despise the church of God and shame those who have nothing? What shall I say to you? Shall I praise you in this? I do not praise you. 
1Co 11:23  For I received from the Lord that which I also delivered to you: that the Lord Jesus on the same night in which He was betrayed took bread; 
1Co 11:24  and when He had given thanks, He broke it and said, "Take, eat; this is My body which is broken for you; do this in remembrance of Me." 
1Co 11:25  In the same manner He also took the cup after supper, saying, "This cup is the new covenant in My blood. This do, as often as you drink it, in remembrance of Me." 
1Co 11:26  For as often as you eat this bread and drink this cup, you proclaim the Lord's death till He comes. 
1Co 11:27  Therefore whoever eats this bread or drinks this cup of the Lord in an unworthy manner will be guilty of the body and blood of the Lord. 
1Co 11:28  But let a man examine himself, and so let him eat of the bread and drink of the cup. 
1Co 11:29  For he who eats and drinks in an unworthy manner eats and drinks judgment to himself, not discerning the Lord's body. 
1Co 11:30  For this reason many are weak and sick among you, and many sleep. 

Likely, unexamined sin, eventual sickness and death.

Clear Biblical connection between our Spiritual Condition and Physical Condition

Blog:  Dr. Steven Sinatra ;  https://heartmdinstitute.com 
(Pro 12:25)  Anxiety in the heart of man causes depression, But a good word makes it glad.
(Pro 15:17)  Better is a dinner of herbs where love is, Than a fatted calf with hatred.
Mat 5:21  "You have heard that it was said to those of old, 'YOU SHALL NOT MURDER, and whoever murders will be in danger of the judgment.' 
Mat 5:22  But I say to you that whoever is angry with his brother without a cause shall be in danger of the judgment. And whoever says to his brother, 'Raca!' shall be in danger of the council. But whoever says, 'You fool!' shall be in danger of hell fire. 
Mat 5:23  Therefore if you bring your gift to the altar, and there remember that your brother has something against you, 
Mat 5:24  leave your gift there before the altar, and go your way. First be reconciled to your brother, and then come and offer your gift. 

(1Co 3:16)  Do you not know that you are the temple of God and that the Spirit of God dwells in you?
(1Co 3:17)  If anyone defiles the temple of God, God will destroy him. For the temple of God is holy, which temple you are.
Context, starting with vs. 5
(1Co 3:5)  Who then is Paul, and who is Apollos, but ministers through whom you believed, as the Lord gave to each one?
(1Co 3:10)  According to the grace of God which was given to me, as a wise master builder I have laid the foundation, and another builds on it. But let each one take heed how he builds on it.
(1Co 3:12)  Now if anyone builds on this foundation with gold, silver, precious stones, wood, hay, straw,
(1Co 3:13)  each one's work will become clear; for the Day will declare it, because it will be revealed by fire; and the fire will test each one's work, of what sort it is.
(1Co 3:16)  Do you {PLURAL YOU - group, body being addressed} not know that you are the temple of God and that the Spirit of God dwells in you?
(1Co 6:12)  ""All things are lawful for me"", but all things are not helpful. All things are lawful for me, but I will not be brought under the power of any.
(1Co 6:13)  ""Foods for the stomach and the stomach for foods"", but God will destroy both it and them. Now the body is not for sexual immorality but for the Lord, and the Lord for the body.
(1Co 6:14)  And God both raised up the Lord and will also raise us up by His power.
(1Co 6:15)  Do you not know that your bodies are members of Christ? Shall I then take the members of Christ and make them members of a harlot? Certainly not!
(1Co 6:16)  Or do you not know that he who is joined to a harlot is one body with her? For "THE TWO," He says, "SHALL BECOME ONE FLESH."
(1Co 6:17)  But he who is joined to the Lord is one spirit with Him.
(1Co 6:18)  Flee sexual immorality. Every sin that a man does is outside the body, but he who commits sexual immorality sins against his own body.
(1Co 6:19)  Or do you not know that your body is the temple of the Holy Spirit who is in you, whom you have from God, and you are not your own?
(1Co 6:20)  For you were bought at a price; therefore glorify God in your body and in your spirit, which are God's.
THE WAY WE TAKE CARE OF OUR BODY  is Important to God... 

WHAT WE DO is important to GOD.

WE did not get to choose our parents or how / where we were raised.
IF we are ready to change, repent and go BEYOND our current way of thinking, Paul's words should be ringing in our ears... 
TED talk by general responsible for INTAKE of civilians, obesity is a NATIONAL SECURITY ISSUE... 

Psa 103:1  A Psalm Of David. Bless the LORD, O my soul; And all that is within me, bless His holy name! 
Psa 103:2  Bless the LORD, O my soul, And forget not all His benefits: 
Psa 103:3  Who forgives all your iniquities, Who heals all your diseases, 
Psa 103:4  Who redeems your life from destruction, Who crowns you with lovingkindness and tender mercies, 
Psa 103:5  Who satisfies your mouth with good things, So that your youth is renewed like the eagle's. 
A good description of balanced, round about health.

HE Demands Self-examination and change.  WE can claim this promise when we are ONE with GOD.
(Isa 53:4)  Surely He has borne our griefs And carried our sorrows; Yet we esteemed Him stricken, Smitten by God, and afflicted.
Isa 59:1  Behold, the LORD's hand is not shortened, That it cannot save; Nor His ear heavy, That it cannot hear. 
Isa 59:2  But your iniquities have separated you from your God; And your sins have hidden His face from you, So that He will not hear. 

(Mat 18:21)  Then Peter came to Him and said, "Lord, how often shall my brother sin against me, and I forgive him? Up to seven times?"
(Mat 18:22)  Jesus said to him, "I do not say to you, up to seven times, but up to seventy times seven.
(Mat 18:33)  Should you not also have had compassion on your fellow servant, just as I had pity on you?'
(Mat 18:34)  And his master was angry, and delivered him to the torturers until he should pay all that was due to him.
(Mat 18:35)  "So My heavenly Father also will do to you if each of you, from his heart, does not forgive his brother his trespasses."

We have an obligation.
Exo 15:25  So he cried out to the LORD, and the LORD showed him a tree. When he cast it into the waters, the waters were made sweet. There He made a statute and an ordinance for them, and there He tested them, 
Exo 15:26  and said, "If you diligently heed the voice of the LORD your God and do what is right in His sight, give ear to His commandments and keep all His statutes, I will put none of the diseases on you which I have brought on the Egyptians. For I am the LORD who heals you." 

National Geographic
8 Mummy finds
(Gal 6:7)  Do not be deceived, God is not mocked; for whatever a man sows, that he will also reap.