life expectancy index

The life expectancy index measures the average number of years a person is expected to live based on current health and living conditions in a country. It reflects factors like healthcare quality, nutrition, sanitation, and overall well-being. A higher index indicates longer expected lifespans and generally better health standards, while a lower index suggests shorter lives due to challenges like disease, poverty, or inadequate healthcare. This index helps compare health and longevity across different nations and tracks improvements over time.