Kalszium

Kalszium is the Hungarian spelling for calcium, a chemical element with the symbol Ca and atomic number 20. It is a soft, grayish-white alkaline earth metal. In its pure form, calcium is highly reactive and rapidly oxidizes when exposed to air. It is never found in elemental form in nature but exists abundantly in various compounds.

Calcium is the fifth most abundant element in Earth's crust. It is a vital component of many minerals, including limestone, chalk, marble, and gypsum. In biological systems, calcium is essential for life. It plays a crucial role in the formation and maintenance of strong bones and teeth, where it is stored in large quantities. Beyond skeletal support, calcium ions are involved in numerous physiological processes. They are critical for muscle contraction, nerve impulse transmission, blood clotting, and the regulation of heart rhythm.

Dietary intake of calcium is necessary to meet the body's requirements. Good sources of calcium include dairy products like milk, cheese, and yogurt, as well as leafy green vegetables, fortified foods, and certain fish. A deficiency in calcium can lead to various health problems, most notably osteoporosis, a condition characterized by weak and brittle bones. Conversely, excessive calcium intake can also have adverse effects, though this is less common and often associated with specific medical conditions or supplements.