Even though the world’s population is growing and we just passed the 8 billion people marker, that doesn’t mean that every country is growing at the same rate. It doesn’t even mean that every country is growing. In fact, some countries are actually losing their population! Global life expectancy has grown from 29 years to 73 years since 1800, indicating better global health and an older world population As life expectancy grows in a country, it’s common for the fertility rate to decrease.
As of 2022, the countries with the highest rate of population change in Nigeria and Pakistan clocking in at around a 2% increase. With Russia and China being the lowest with 0%. Nigeria and Pakistan again lead in fertility rate at 5.14 children per woman(Nigeria) and 3.14 children per woman(Pakistan). There’s a pretty strong correlation between a country’s overall health, its life expectancy, and its fertility rate. The healthier a country, the longer its life expectancy tends to be. Healthy countries also tend to have lower fertility rates, following the trend that fertility rates are inverse to life expectancy.