Getting biblical

I believe that God expects us to take care of the bodies He gave us. When anyone gives you gift, the respectful thing to do is take care of it! God gave us the healthy foods we need to live naturally - fruits, vegetables, grains, and meats. Our society has gone out of its way to create unnatural foods - none of which are good for us or better for us than what God provided from the very first days of the Earth.

Genesis 1:29-30 :
And God said, Behold, I have given you every herb bearing seed, which is upon the face of all the earth, and every tree, in the which is the fruit of a tree yielding seed; to you it shall be for meat. And to every beast of the earth, and to every fowl of the air, and to every thing that creepeth upon the earth, wherein there is life, I have given every green herb for meat: and it was so.

1 Corinthians 6:19-20
Do you not know that your body is a temple of the Holy Spirit, who is in you, whom you have received from God? You are not your own; you were bought at a price. Therefore honor God with your body.

Romans 12:2
Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God's will is—his good, pleasing and perfect will.

I go to a Southern Baptist church, and we are infamous for our gatherings and celebrations revolving around food, generally the unhealthy stuff. How do we get people to change their habits in the church? Should preachers be expected to lead by example and also spread this message? Something to think about.