Ginger is a plant that originated in South Asia but is now grown in many tropical and subtropical regions. It is widely used as both a spice and for medicinal purposes. The root is used fresh, dried, powdered, or as an oil or juice. Ginger is commonly used in Asian, African, and Western cuisines and dishes, as well as for drinks, sweets, and traditional medicines to treat nausea, muscle pain, and other ailments.