General principles and guidelines that can be drawn from the Bible regarding food and health:
Eat whole foods: The Bible emphasizes the importance of eating natural, whole foods. In Genesis 1:29, God gave Adam and Eve "every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it" for food. This suggests that a diet rich in fruits, vegetables, nuts, and grains is ideal.
Eating meat: God made a covenant with Noah and his descendants, promising never again to destroy the earth with a flood. As a part of this covenant, God also gave permission for humans and animals to eat meat: "Every moving thing that lives shall be food for you. And as I gave you the green plants, I give you everything. But you shall not eat flesh with its life, that is, its blood." (Genesis 9:3-4)
Moderation: The Bible teaches moderation in all things, including food. Proverbs 25:16 says, "If you find honey, eat just enough - too much of it, and you will vomit." This principle can be applied to all types of food.
Fasting: The Bible also teaches the spiritual practice of fasting, which involves abstaining from food for a period of time for the purpose of drawing closer to God.
Overall, a Biblically based diet would emphasize the consumption of whole, natural foods and certain meats in moderation. Fasting can also be a part of a Biblically based diet as a spiritual practice.
Both whole foods and fasting has become popular in general due to their health benefits, simplicity, as well as cultural and religious significance.