The birth rate is a measure of how many live births occur in a specific population over a certain period, usually expressed per 1,000 people per year. It helps demographers and policymakers understand population growth and demographic changes. A high birth rate can indicate a young population, while a low birth rate may suggest an aging population or social factors affecting family size. Factors influencing the birth rate include economic conditions, access to healthcare, education, and cultural attitudes towards family and childbearing. Countries with strong family planning programs often experience lower birth rates, while those with limited access to such resources may see higher rates.