Fasting is not unique to the Muslims. It has been practiced for centuries in connection with religious ceremonies by Christians, Jews, Confucianists, Hindus, Taoists, and Jains. God mentions this fact in the Quran:
“O you who believe, fasting is prescribed for you as it was prescribed for those before you, that you may develop God-consciousness.” (Quran 2:183)
Some Native American societies fasted to avert catastrophe or to serve as penance for sin. Native North Americans held tribal fasts to avert threatening disasters. The Native Americans of Mexico and the Incas of Peru observed penitential fasts to appease their gods. Past nations of the Old World, such as the Assyrians and the Babylonians, observed fasting as a form of penance. Jews observe fasting as a form of penitence and purification annually on the Day of Atonement or Yom Kippur. On this day neither food nor drink is permitted.
Early Christians associated fasting with penitence and purification. During the first two centuries of its existence, the Christian church established fasting as a voluntary preparation for receiving the sacraments of Holy Communion and baptism and for the ordination of priests. Later, these fasts were made obligatory, as others days were subsequently added. In the 6th century, the Lenten fast was expanded to 40 days, on each of which only one meal was permitted. After the Reformation, fasting was retained by most Protestant churches and was made optional in some cases. Stricter Protestants, however, condemned not only the festivals of the church, but its traditional fasts as well.
In the Roman Catholic Church, fasting may involve partial abstinence from food and drink or total abstinence. The Roman Catholic days of fasting are Ash Wednesday and Good Friday. In the United States, fasting is observed mostly by Episcopalians and Lutherans among Protestants, by Orthodox and Conservative Jews, and by Roman Catholics.