}}Some population aging determinants are CBR, Infant Mortality, TFR, CDR and Life Expectancy.}}
}}Focus on Life Expectancy: Socioeconomics, Diet and Activity, Active Behaviors: Drug, Tobacco, Alcohol, Disease, War, Food Security and Psychological Stress.}}
Dependency Ratio- A value comparing the working to the nonworking parts of a population
Dependent Population- People under 15 or over 64, they are considered too young or too old to work full-time