Coffee is a widely consumed beverage prepared from the roasted seeds commonly called "beans" of the coffee plant. Coffee was first consumed as early as the 9th century, when it appeared in the highlands of Ethiopia. From Ethiopia, it spread to Egypt and Yemen, and by the 15th century had reached Persia, Turkey, and northern Africa. From the Muslim world, coffee spread to Italy, then to the rest of Europe and the Americas. Today, coffee is one of the most popular beverages worldwide.
The health effects of coffee are disputed, and many studies have examined the relationship between coffee consumption and certain medical conditions. Studies have suggested that the consumption of coffee lowers the risk of certain diseases but may have negative effects as well, especially when excessive. The health effects of coffee are disputed, and many studies have examined the relationship between coffee consumption and certain medical conditions. Studies have suggested that the consumption of coffee lowers the risk of certain diseases but may have negative effects as well, especially when excessive