Ramadan, Islam’s holy month of fasting, has been observed and celebrated by Muslims around the world for more than 14 centuries. In the seventh century, Prophet Muhammad stated that Islam is built upon five pillars and fasting in Ramadan is one of them. Today, nearly a quarter of the world’s population mark or observe the fast during daylight hours, giving great respect to the Islamic month in which the holy book of Islam, the Quran, was revealed to the Prophet.