Fasting is one of humanity's oldest practices. For thousands of years, people across cultures and traditions have voluntarily abstained from food to pursue spiritual growth, improve health, develop discipline, sharpen the mind, or create social change.
From ancient prophets who undertook extended spiritual fasts, to philosophers who believed fasting enhanced wisdom, to modern researchers studying metabolism and longevity, fasting has played a remarkable role throughout human history.
The individuals featured in this collection represent some of the most influential figures connected with fasting. Their reasons for fasting varied greatly—faith, philosophy, self-discipline, medicine, protest, or scientific discovery—but each contributed to the enduring story of fasting.
Ancient Fasting Figures
Moses (c. 1400–1200 BC)
Famous Fast / Practice: 40 days on Mount Sinai
According to biblical tradition, Moses fasted for 40 days and nights on Mount Sinai before receiving the Ten Commandments. His fast represents one of the earliest and most recognized examples of extended spiritual fasting.
Read more: Moses and the 40-Day Fast on Mount Sinai →
Elijah (c. 9th century BC)
Famous Fast / Practice: 40 days and 40 nights
The prophet Elijah is associated with one of the most famous fasts in the Hebrew Bible. According to tradition, Elijah traveled for 40 days and nights to Mount Horeb after being strengthened by divine provision.
Read more: Elijah's Journey of Faith and Fasting →
Pythagoras (c. 570–495 BC)
Famous Fast / Practice: Regular fasting for discipline and purification
The Greek philosopher Pythagoras believed fasting could prepare the mind for learning and spiritual understanding. Ancient traditions claim he required students to complete a prolonged fast before entering his school.
Read more: Pythagoras and the Philosophy of Fasting →
Siddhartha Gautama (The Buddha) (c. 563–483 BC)
Famous Fast / Practice: Extreme fasting before enlightenment
Before becoming the Buddha, Siddhartha Gautama practiced severe fasting and physical austerity in his search for enlightenment. He eventually rejected extreme deprivation and taught the Middle Way—a balanced approach between indulgence and self-denial.
Read more: The Buddha's Journey Through Fasting and the Middle Way →
Hippocrates (c. 460–370 BC)
Famous Fast / Practice: Therapeutic fasting
Often called the father of Western medicine, Hippocrates believed the body had natural healing abilities and recommended fasting during certain illnesses. His writings influenced later medical traditions.
Read more: Hippocrates and the Ancient Medical Practice of Fasting →
Plato (c. 428–348 BC)
Famous Fast / Practice: Fasting for mental clarity
The Greek philosopher Plato viewed discipline and self-control as essential to developing wisdom. Historical accounts suggest he practiced periods of fasting as part of philosophical discipline.
Read more: Plato, Philosophy, and Fasting →
Religious and Spiritual Fasting Figures
Modern Fasting Figures
John Wesley (1703–1791)
Famous Fast / Practice: Weekly fasting
The founder of Methodism fasted regularly, traditionally observing fasting on Wednesdays and Fridays until the afternoon. He considered fasting an important part of Christian spiritual practice.
Read more: John Wesley and the Methodist Tradition of Fasting →
Ramakrishna (1836–1886)
Famous Fast / Practice: Spiritual fasting and meditation
The Indian mystic Ramakrishna observed periods of fasting during intense spiritual practices and meditation.
Read more: Ramakrishna and the Spiritual Path of Fasting →
Mahatma Gandhi (1869–1948)
Famous Fast / Practice: Fasting for spirituality and social change
Gandhi transformed fasting into a powerful tool of nonviolent protest. His fasts, some lasting multiple weeks, became symbols of moral conviction and peaceful resistance.
Read more: Gandhi: The Power of Fasting for Change →
Dr. Jason Fung (1966–Present)
Famous Fast / Practice: Therapeutic fasting
A physician specializing in metabolic health, Jason Fung has popularized intermittent and extended fasting as approaches for improving insulin resistance and metabolic health.
Read more: Dr. Jason Fung and Modern Therapeutic Fasting →
Dr. Valter Longo (1967–Present)
Famous Fast / Practice: Fasting-mimicking diets and longevity research
A leading researcher in aging and metabolism, Valter Longo developed the fasting-mimicking diet and studies how periodic fasting may influence longevity and disease prevention.
Read more: Dr. Valter Longo and the Science of Fasting →
The Continuing Story of Fasting
The history of fasting is a story of transformation. Across thousands of years, people have used fasting to seek wisdom, deepen faith, improve health, and strengthen personal discipline.
Although the motivations behind fasting have changed over time, the practice remains remarkably relevant today. Modern science is now exploring many biological processes that ancient traditions recognized intuitively—including metabolic flexibility, cellular repair, and the relationship between food timing and health.
The people in this collection remind us that fasting is more than simply not eating. For many, it has been a tool for reflection, renewal, and personal growth.
Medical Disclaimer
Disclaimer: The content on this website, including all articles, text, graphics, and other material, is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before embarking on a prolonged fasting protocol or new exercise regimen. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.