Religion and Dietary Practices


Since the beginning of time, dietary practices have been incorporated into the religious practices of people around the world. Some religious sects abstain, or are forbidden, from consuming certain foods and drinks; others restrict foods and drinks during their holy days; while still others associate dietary and food preparation practices with rituals of the faith. The early biblical writings, especially those found in Leviticus, Numbers, and Deuteronomy of the Old Testament (and in the Torah) outlined the dietary practices for certain groups (e.g., Christians and Jews), and many of these practices may still be found among these same groups today. Practices such as fasting (going without food and/or drink for a specified time) are described as tenets of faith by numerous religions.

Type of religion

Practice or restriction



  • Refrain from meat, vegetarian diet is desirable
  • Moderation in all foods
  • Fasting required of monks
  • Natural foods of the earth are considered most pure
  • Monks avoid all solid food after noon

Eastern Orthodox Christianity

  • Restrictions on Meat and Fish
  • Fasting Selectively
  • Observance of Holy Days includes fasting and restrictions to increase spiritual progress


  • Beef prohibited
  • All other meat and fish restricted or avoided
  • Alcohol avoided
  • Numerous fasting days
  • Cow is sacred and can't be eaten, but products of the “sacred” cow are pure and desirable
  • Fasting promotes spiritual growth


  • Pork and certain birds prohibited
  • Alcohol prohibited
  • Coffee/tea/stimulants avoided
  • Fasting from all food and drink during specific periods
  • Eating is for good health
  • Failure to eat correctly minimizes spiritual awareness
  • Fasting has a cleansing effect of evil elements


  • Pork and shellfish prohibited
  • Meat and dairy at same meal prohibited
  • Leavened food restricted
  • Fasting practiced
  • Land animals that do not have cloven hooves and that do not chew their cud are forbidden as unclean (e.g., hare, pig, camel)
  • Kosher process is based upon the Torah


  • Alcohol and beverages containing caffeine prohibited
  • Moderation in all foods
  • Fasting practiced
  • Caffeine is addictive and leads to poor physical and emotional health
  • Fasting is the discipline of self-control and honoring to God


  • Few restrictions of food or fasting observations
  • Moderation in eating, drinking, and exercise is promoted
  • God made all animal and natural products for humans' enjoyment
  • Gluttony and drunkenness are sins to be controlled


  • Meat and fish restricted
  • Vegetarian diets only, with salts, preservatives, and condiments prohibited
  • Herbal drinks permitted; alcohol, coffee, and soft drinks prohibited
  • Marijuana used extensively for religious and medicinal purposes
  • Pigs and shellfish are scavengers and are unclean
  • Foods grown with chemicals are unnatural and prohibited
  • Biblical texts support use of herbs (marijuana and other herbs)

Roman Catholicism

  • Meat restricted on certain days
  • Fasting practiced
  • Restrictions are consistent with specified days of the church year

Seventh-day Adventist

  • Pork prohibited and meat and fish avoided
  • Vegetarian diet is encouraged
  • Alcohol, coffee, and tea prohibited
  • Diet satisfies practice to “honor and glorify God”


Religious belief expressed as food customs

Understanding the reasons for nutritional and dietary customs in any religion requires a brief orientation of the rationale for such practices and laws. Many religious customs and laws may also be traced to early concerns for health and safety in consuming foods or liquids. In the past, preservation techniques for food were limited. Modern conveniences such as electricity were unavailable, and the scholars of the day did not understand theories of health promotion, disease prevention, and illness as they do today.

Therefore, religious leaders of the day developed rules about the consumption of foods and drinks, and religious practices, restrictions, and laws evolved. Specific laws about what can be consumed remain in most religions today. The lack of mechanisms to refrigerate or preserve foods led to certain rituals, such as the draining of blood from slaughtered animals, while restrictions on the eating of foods known to spoil easily, such as eggs, dairy products, and meats, were devised for safety reasons.

Attention to specific eating practices, such as overeating (gluttonous behaviors), use of strong drink or oral stimulants, and vegetarian diets, were also incorporated into the doctrine of religious practice. In addition to laws about the ingestion of foods or drinks, the practice of fasting, or severely restricting intake of food and/or drink, became prevalent, and is still practiced by many religions today.

The role of fasting

Many religions incorporate some element of fasting into their religious practices. Laws regarding fasting or restricting food and drink have been described as a call to holiness by many religions. Fasting has been identified as the mechanism that allows one to improve one's body (often described as a “temple” created by God), to earn the approval of Allah or Buddha, or to understand and appreciate the sufferings of the poor.

Fasting has also been presented as a means to acquire the discipline required to resist temptation, as an act of atonement for sinful acts, or as the cleansing of evil from within the body. Fasting may be undertaken for several hours, at a specified time of the day (e.g., from sunrise to sunset, as practiced by modern Jews); for a specified number of hours (e.g., twelve, twenty-four, or more, as observed by Catholics or Mormons who fast on designated days); or for consecutive days, such as during the month of Ramadan for certain Muslims. Regardless of the time frame or rationale, religious groups observe the practice of fasting worldwide.

Major religions with food prescriptions

Although no two religions hold exactly the same ideology about diet, health, and spiritual wellness, many do embrace similar practices.

BUDDHISM. Many Buddhists are vegetarians, though some include fish in their diet. Most do not eat meat and abstain from all beef products. The birth, enlightenment, and death of Buddha are the three most commonly recognized festivals for feasting, resting from work, or fasting. Buddhist monks fast completely on certain days of the moon, and they routinely avoid eating any solid foods after the noon hour.

EASTERN ORTHODOX CHRISTIANITY. An essential element of practicing an Orthodox life includes fasting, since its intrinsic value is part of the development of a spiritual life. To practicing Orthodox believers, fasting teaches self-restraint, which is the source of all good.

HINDUISM. Hindus do not consume any foods that might slow down spiritual or physical growth. The eating of meat is not prohibited, but pork, fowl, ducks, snails, crabs, and camels are avoided. The cow is sacred to Hindus, and therefore no beef is consumed. Other products from the cow, however, such as milk, yogurt, and butter are considered innately pure and are thought to promote purity of the mind, spirit, and body.

Many devout Hindus fast on the 18 major Hindu holidays, as well as on numerous personal days, such as birthdays and anniversaries of deaths and marriages. They also fast on Sundays and on days associated with various positions of the moon and the planets.

ISLAM. To the Muslims, eating is a matter of faith for those who follow the dietary laws called Halal, a term for all permitted foods. Those foods that are prohibited, such as pork and birds of prey, are known as Haram, while the foods that are questionable for consumption are known as Mashbooh. Muslims eat to preserve their good health, and overindulgence or the use of stimulants such as tea, coffee, or alcohol are discouraged. Fasting is practiced regularly on Mondays and Thursdays, and more often for six days during Shawwal (the tenth month of the Islamic year) and for the entire month of Ramadan (the ninth month). Fasting on these occasions includes abstention from all food and drink from sunrise to sunset.

JUDAISM. The Jewish dietary law is called Kashrut, meaning “proper” or “correct.” The term kosher refers to the methods of processing foods according to the Jewish laws. The processing laws and other restrictions relating to the preparation of food and drink were devised for their effects on health. For example, rules about the use of pans, plates, utensils, and separation of meat from dairy products are intended to reduce contamination. Other rules include:

MORMONISM. The law of health—the Word of Wisdom—contains the laws for proper eating and the rules of abstinence for tobacco, alcohol, coffee, tea, chocolate, and illegal drugs. Mormons must choose foods that build up the body, improve endurance, and enhance intellect. Products from the land, such as grains, fruits, vegetables, and nuts, are to take the place of meats; meats, sugar, cheeses, and spices are to be avoided. Reason and self-control in eating is expected in order to stay healthy.

RASTAFARIANISM. Members of this group are permitted to eat any food that is I-tal food, meaning that it is cooked only slightly. Therefore, meats are not consumed, canned goods are avoided, and drinks that are unnatural are not allowed. Fish under 12 inches (30.48 cm) long may be eaten, but other types of seafood are restricted.

ROMAN CATHOLICISM. The dietary practices of devout Catholics center around the restriction of meat or fasting behaviors on specified holy days.

SEVENTH-DAY ADVENTISTS. The Seventh-day Adventist Church advocates a lacto-ovo vegetarian diet, including moderate amounts of low-fat dairy products and the avoidance of meat, fish, fowl, coffee, tea, alcohol, and tobacco products (though these are not strictly prohibited). The church's beliefs are grounded in the Bible, and in a “belief in the holistic nature of people” (Seventh-day Adventist General Conference Nutrition Council).

While the dietary practices of different religions vary, and the rationale for each practice is based upon different texts, there is also much commonality. The practice of fasting is almost universal across religious groups, and most regard it as a mechanism to discipline the followers in a humbling way for spiritual growth. Many fasting practices are connected with specific holy days. The variation in consumption of meat and vegetables is much wider.

Health benefits and risks associated with specific practices

Certain groups of people must necessarily be excused from fasting and restrictive practices. These groups include pregnant or nursing women, individuals with diabetes or other chronic disorders, those engaged in very strenuous work, malnourished individuals, young children, the elderly, and people with disabilities. Recognition of these exceptions has been addressed by each religious group. Most fasting practices allow certain intakes of liquid, particularly water. In fasting regimes where water is restricted, a danger of dehydration exists, and those fasting should be monitored.

Those who fast without liquids increase their risk of a number of health problems. Symptoms of dehydration include headache, dry mouth, nausea, fever, sleepiness, and, in extreme cases, coma. When these symptoms occur, it is important to end the fast or add water to the fast. Depending on the extent of the symptoms, ending the fast may be the only alternative. In severe dehydration cases, medical care should be sought as soon as possible to restore proper health.

Some negative health consequences have been observed as a result of fasting practices, however, especially those carried out over longer periods, such as the Muslim fast during Ramadan. For example, excess acids can build up in the digestive system during a prolonged fast. This gastric acidity results in a sour taste in the mouth, a burning in the stomach, and other symptoms of illness.

Going without food and/or drink for a specified time.
Lack of adequate nutrients in the diet.
Unpleasant sensation in the gut that precedes vomiting.
Nervous system—
The brain, spinal cord, and nerves that extend throughout the body.
Prohibitions, rules against.

The structure and outward appearance of each person's body is, in part, a reflection of the food and drink he or she consumes. All the organs of the body, as well as the skin, bones, muscles, and nerves, need nutrition to survive, regenerate, maintain function, and develop structural foundations. The vital organs, such as the liver, heart, brain, and kidneys, depend upon essential nutrients from food and drink to sustain life, increase strength, and improve health. Throughout life, the body constantly breaks down the food products that are ingested, using some components to rebuild the tissues that contribute to good health. Similarly, the body also disposes of the waste products of food through excretory processes or in storage centers (fat deposits, for instance) in the body.

The restriction of, or abstention from, certain foods may have a direct impact on the health of those engaged in such practices. Some effects have been found to be positive, as in the case of vegetarian diets, which are eaten by many Seventh-day Adventists, Hindus, Buddhists, and Rastafarians. Research results have documented a 50% reduction in heart disease and longer life expectancy in people who eat a well-planned vegetarian diet. There are a number of religious rationales for a vegetarian diet. According to the Book of Genesis in the Bible, humans were given a plant-based diet at the creation of the world. There are also ethical issues that involve the killing of animals for food, and environmental issues regarding the raising of livestock and the safety of the food supply.

Use of, and abstention from, stimulants

The use of wine in religious ceremonies is regarded as acceptable by certain groups. For example, Roman Catholics, Eastern Orthodox Christians, and certain Protestant denominations use wine as a sacramental product to represent the blood of Christ in communion services. According to the writings of the apostle Paul, wine used in moderation may be consumed for the soothing effect it has upon an upset stomach. Mormons, however, specifically forbid wine or any alcoholic drinks because of their stimulant properties. Jews regard grapes as a fruit of idolatry, and therefore forbid the use of wine or products made from grapes except under special conditions.

Many religious leaders and healthcare experts regard tobacco, another stimulant, as a malignant poison that affects the health of its users. Research continues to support the harmful and deleterious effects of the use of cigarettes and tobacco products. Cancer, high blood pressure, and heart disease have all been linked to tobacco use.

Although marijuana has been shown to control pain in advanced diseases such as cancer, it has been considered a restricted drug by all but those practicing Rastafarianism. Rastafarians introduced marijuana into their religious rites because they consider it the “weed of wisdom,” and because they believe it contains healing ingredients.



Brown, Linda Keller, and Kay Mussell, eds. Ethnic and Regional Foodways in the United States: The Performance of Group Identity. Knoxville: University of Tennessee Press, 1984.

Desai, Anita. Fasting, Feasting. New York: Houghton Mifflin, 2000.

Fishbane, Michael. The Garments of Torah: Essays in Biblical Hermeneutics. Bloomington: Indiana University Press, 1992.

Gordon, Lewis R., ed. Existence in Black: An Anthology of Black Existential Philosophy. New York: Routledge, 1997.


Sabaté, Joan. “Religion, Diet, and Research.” British Journal of Nutrition 92, no. 2 (August 2004): 199–201.


Church of Jesus Christ of Latter-Day Saints. “The Word of Wisdom.” (accessed April 17, 2018).

“Clarified: Religious Dietary Restrictions.” CNN Eatocracy (blog), July 20, 2010. (accessed April 17, 2018).

“Judaism 101.” (accessed April 17, 2018).

Orthodox Christian Information Center. “Living an Orthodox Life.” (accessed April 17, 2018).

Seventh-day Adventist Dietetic Association. “The Seventhday Adventist Position Statement on Vegetarian Diets.” (accessed April 17, 2018).


Seventh-day Adventist Dietetic Association, Department of Nutrition & Dietetics, School of Allied Health Professions, Loma Linda University - NH 1103, Loma Linda, CA, 92350,, .

Ruth A. Waibel

  This information is not a tool for self-diagnosis or a substitute for professional care.