Acid-base regulators are substances that help maintain the balance of acidity and alkalinity in various environments, including the human body and agricultural soils. They work by neutralizing excess acids or bases, ensuring that pH levels remain within a healthy range. This balance is crucial for processes like digestion, enzyme function, and overall metabolic health. In agriculture, acid-base regulators can improve soil quality by adjusting pH levels, which affects nutrient availability for plants. Common examples include lime to raise pH and sulfur to lower it. Proper use of these regulators can enhance crop yield and soil health.