While there is no "one-size-fits-all" diet, many religions have dietary perscriptions for their members. For members of The Church of Jesus Christ of Latter-day Saints, it's the Word of Wisdom found in Doctrine and Covenants 89.
The Word of Wisdom consists of seven base dietary rules: Avoid alcoholic beverages; avoid the use of tobacco; avoid hot drinks (understood to mean tea and coffee); eat all herbs (understood to mean vegetables) in their season; eat all fruits in their season; eat meat sparingly; eat grains, especially wheat.
An author and a blogger have developed diets and recipes around the Word of Wisdom.
Skip Hellewell, author of wordofwisdomliving.com, points out, "There is a natural link between religion and diet. Spiritual health — the first concern of religion — is linked to physical health, and physical health is most influenced by diet."