Ancient Egyptian Religion
Swine meat (associated with Set, god of chaos); fish and certain fowl during priestly service; fermented foods during certain festivals
Spiritual Purpose: Maintain ritual purity and honor divine dietary laws to strengthen communion with the gods and preserve ma'at
Ancient Mesopotamian Religion
All food before major festival ceremonies; ritual purity requirements during temple service
Spiritual Purpose: Demonstrate grief, prepare for sacred communication, and appease angered deities during times of plague or calamity
Bahá'í
The annual 19-day Bahá'í fast involves complete abstinence from food and drink from sunrise to sunset. No food, drink, or medication (except essential medicines) is taken during fasting hours.
Spiritual Purpose: A period of intensified prayer, reflection, and detachment from material life. Believers prepare spiritually before the new year, deepen their connection to God, and renew commitment to divine teachings.
Buddhism
Monks and nuns abstain from solid food after noon. Lay practitioners on Uposatha days may adopt the eight precepts, including eating only one meal before noon. Moderation rather than total abstention is emphasized.
Spiritual Purpose: Mindfulness, reduction of attachment and craving, support for meditation practice, cultivation of contentment, and walking the Middle Way between indulgence and severe asceticism.
Cao Dai
Vegetarianism on fast days; abstention from alcohol and tobacco. Stricter observants practice complete fasting from food and water during designated periods. Some practitioners observe the Eight Precepts similar to Mahayana Buddhism (vegetarian diet, no intoxicants, no entertainment, no luxury sleeping arrangements).
Spiritual Purpose: Spiritual purification and karmic cleansing, alignment of body and spirit with divine law, strengthening devotion to the Supreme Being (Cao Đài), preparation for meditative contact with saints and spirits, and cultivation of compassion and non-violence
Catholicism
Abstinence from meat on Fridays during Lent and Ash Wednesday; reduced food intake on fasting days
Spiritual Purpose: Mortify the flesh, unite with Christ's suffering, increase prayer and almsgiving, and prepare for Easter celebration
Christianity
Meat (especially on Fridays during Lent), rich foods, and sometimes dairy and eggs in Eastern traditions. One full meal and two smaller meals on fast days.
Spiritual Purpose: Repentance, self-denial, solidarity with Christ's suffering, preparation for holy seasons, and deepening prayer life.
Confucianism
Confucianism does not mandate fasting but recognizes dietary restraint during mourning periods as a sign of filial respect and inward focus.
Spiritual Purpose: The emphasis is on proper ritual conduct and emotional sincerity in honoring the deceased rather than on systematic fasting discipline. Restraint expresses filial piety and sacred focus.
Eastern Orthodoxy
Meat, fish (except shellfish on some days), dairy, eggs, oil, and wine on fasting days
Spiritual Purpose: Purify the passions, attune the body-soul to divine realities, commemorate Christ's sufferings, and create space for theosis through ascetical discipline
Gnosticism
Meat, wine, worldly pleasures; extreme ascetics practiced vegetarianism, celibacy, and severe physical deprivation
Spiritual Purpose: Denigrate the flesh and material world, demonstrate rejection of the Demiurge's authority, cultivate spiritual transcendence, and prepare for gnosis
Hermeticism
Heavy foods and excess consumption; fermented foods and intoxicants; sensory excess and worldly attachments
Spiritual Purpose: Purify the body as a temple of the divine, achieve mental clarity for philosophical contemplation, align personal will with cosmic law, and facilitate alchemical transformation
Hinduism
Varies widely: some fasts permit fruits, milk, and nuts (phalahar); others require complete abstention. Grains, onions, garlic, and non-vegetarian food are typically avoided. Some observe nirjala (waterless) fasts.
Spiritual Purpose: Purification of body and mind, devotion to specific deities, accumulation of spiritual merit (punya), self-control, and fulfillment of vows (vrat).
Indigenous/Native American Spirituality
Varies by nation and tradition. Plains tribes often fast completely (no food or water) during vision quests. Southwestern tribes may restrict certain foods during ceremonies. Some restrict meat or use only foods gathered traditionally. Duration and intensity depend on spiritual purpose and individual capacity.
Spiritual Purpose: Seeking visions and spiritual guidance, honoring ancestors, strengthening connection to Earth and natural cycles, purification before ceremonies, mourning and grief, preparing for adult responsibilities, and expressing gratitude to the Creator and spirits
Islam
Complete abstention from food, drink, smoking, and marital relations from dawn (Fajr) to sunset (Maghrib). The pre-dawn meal (Suhur) and the meal to break the fast (Iftar) frame each day.
Spiritual Purpose: Taqwa (God-consciousness), self-discipline, gratitude for blessings, empathy with the hungry and poor, spiritual renewal, and community solidarity.
Islam: Hadith
Food, drink, marital relations, and smoking from dawn (Fajr) to sunset (Maghrib)
Spiritual Purpose: Cultivate piety (Taqwa), empathy for the hungry, self-discipline, and spiritual proximity to God; atone for sins and strengthen faith
Jainism
Jain fasting (Upavasa) is one of the most rigorous in any religious tradition. Fasting rapidly purifies the soul by burning karma. During Paryushan, fasting extends to complete abstinence from food and water.
Spiritual Purpose: Fasting rapidly purifies the soul by burning karma and cultivates equanimity. It accelerates liberation through self-discipline and non-violence. Monks and nuns undertake extreme extended fasting.
Judaism
Complete abstention from food and water on major fasts (Yom Kippur, Tisha B'Av). Minor fasts restrict food and drink from dawn to nightfall only. Leather shoes, bathing, and anointing are also forbidden on Yom Kippur.
Spiritual Purpose: Atonement, repentance (teshuvah), mourning national tragedies, spiritual purification, and drawing closer to God through self-affliction.
Kabbalah
Complete abstention from food (and sometimes water) on High Holy Days; abstention from meat on introspective days; limitation of sleep and sensory indulgence
Spiritual Purpose: Purify the body as a vessel for divine consciousness, weaken the Lower Self (Yetzer Hara), create receptivity to mystical experience, and restore cosmic harmony (Tikun)
Latter-day Saints
Complete abstention from food and water for two consecutive meals. The fast typically begins after the Saturday evening meal and ends with the Sunday evening meal. Young children, the elderly, pregnant women, and those with health conditions are exempt.
Spiritual Purpose: Drawing closer to God, humbling oneself, seeking spiritual strength and guidance, expressing gratitude, and developing self-mastery over physical appetites.
Lutheranism
Luther rejected mandatory fasting as a means of earning salvation but preserved voluntary fasting as a spiritual discipline of gratitude and self-examination. Traditional Lutheran fasting often involves abstinence from meat on certain days.
Spiritual Purpose: Fasting is always linked with prayer and almsgiving — never as merit before God. It represents gratitude for Christ's sacrifice and commitment to spiritual deepening, not as payment or earning of salvation.
Mandaeism
Avoidance of flesh meat, wine, and sexual relations. Complete abstention from food and drink. Ritual immersion (masiqta) often accompanies fasting. Some restrictions include avoidance of salt and cooked foods during specific fasts.
Spiritual Purpose: Ritual purification (taharah) of body and soul, preparation for sacred rites and initiations, atonement for transgressions, strengthening connection to the divine Light (Malka d'Nur), and honoring the cosmic struggle between light and darkness
Rastafari
Avoidance of processed foods, salt, alcohol (especially rum), and animal products for strict observants (Nyabinghi order). Fish without scales and shellfish are forbidden. Many practice I-tal diet (natural, whole foods; 'I-tal' means vital). Some observe periodic juice or fruit fasts.
Spiritual Purpose: Purification of the body temple, reconnection with African roots and divine consciousness (Jah), preparation for spiritual elevation, resistance against Babylon (oppressive systems), and alignment with natural living as divine will
Shinto
Shinto fasting (Imi) involves temporary dietary restrictions and abstention from polluting activities before major rituals and festivals. The goal is ritual purity (Seiketsu) rather than spiritual mortification.
Spiritual Purpose: Clearing the body and spirit to be fit vessels for kami presence. Fasting purifies and prepares practitioners for sacred celebration and renewed harmony with divine spirits.
Sikhism
Sikhism does not prescribe obligatory fasting, viewing external austerities as less important than internal spiritual discipline. Voluntary fasting is practiced by some as personal devotion.
Spiritual Purpose: True fasting, in Sikh teaching, is the conquest of the mind's attachment to ego, lust, and worldly desire — not merely abstention from food. Internal discipline is emphasized over external practice.
Sufism
Food and drink during Ramadan; voluntary fasts of the tongue (silence), eyes, ears, and heart beyond food abstention
Spiritual Purpose: Mortify all faculties of the ego, create inner emptiness for divine filling, and accelerate the journey through spiritual stations (Maqamat)
Taoism
Grains (especially the five cereals: wheat, rice, millet, sorghum, beans), strong-flavored foods (garlic, onions), meat, and alcohol. Advanced practitioners may subsist on qi (breath), pine nuts, sesame, and herbs.
Spiritual Purpose: Purification of the body to become a vessel for the Tao, longevity cultivation, refinement of internal energy (qi), preparation for ritual and meditation, and transcendence of physical dependency.
Yazidism
Avoidance of pork, shellfish, and certain fish. Seasonal fasting from meat, dairy, and animal products. Strict fast from all food and drink for extended periods during the three annual fast periods. Alcohol is forbidden.
Spiritual Purpose: Spiritual purification and atonement, honoring the cosmic deity Melek Taus (Peacock Angel), strengthening community bonds through shared observance, commemoration of sacred events, and preparation of the soul for the divine realm
Zoroastrianism
Zoroastrian fasting accompanies the six Gahanbar seasonal festivals and purification periods. Fasting purifies the soul for cosmic battle and demonstrates alignment with Ahura Mazda and Asha (divine order).
Spiritual Purpose: Fasting purifies the soul for cosmic battle and demonstrates alignment with Ahura Mazda. It accelerates moral transformation and strengthens spiritual resolve in the eternal struggle between good and evil.