There are various factors that influence life expectancy, including diet, public health, medical care, economic circumstances, gender differences, crime rate, wars etc. With that said, it comes as no surprise that most of countries with the lowest life expectancy are located in poor African and war-torn regions. It’s still surprising however, to come face to face with the fact that there are countries with average life expectancies of under 50 years. Compared to the Hong-Kongers or the Japanese who live nearly 84 years on average, it is significantly less! To find out what countries have the shortest average life spans in the world, check out the 25 Countries With The Lowest Life Expectancy In The World.