Potassium is a vital mineral and electrolyte that plays a key role in maintaining the body's fluid balance, nerve function, and muscle contractions. It is found in many foods, especially fruits and vegetables like bananas, oranges, and spinach. Adequate potassium intake helps regulate blood pressure and supports overall heart health. In addition to its health benefits, potassium is also an essential element in agriculture. It is commonly used in fertilizers to promote plant growth and improve crop yields. This makes potassium important not just for human health, but also for the food supply and the economy, linking it to topics like agriculture and nutrition.