Calcium, potassium, magnesium, phosphorus and sodium are essential dietary minerals that play critical roles in human physiology including bone health, nerve transmission, muscle function, fluid balance and energy metabolism. These elements occur naturally in foods such as dairy products, fruits, vegetables, nuts, seeds and meats. They are not a single chemical compound but a group of inorganic elements required in varying amounts for metabolic processes. Their bioavailability depends on food matrix, interactions with other nutrients and individual physiological status. In food science they contribute to texture, flavor and preservation properties. Excessive intake of certain minerals like sodium can lead to health concerns while deficiencies in others such as calcium or magnesium are associated with specific clinical conditions.