Coca-Cola Classic — commonly simply referred to as Coke — and Diet Coke are popular beverages around the world.

However, soft drink consumption has been associated with many health concerns, ranging from weight gain to high blood sugar ( 1 , 2 ).

Not only that, but Coke and Diet Coke also contain a hearty dose of caffeine, which can be problematic for those looking to cut down their caffeine consumption.

This article compares the caffeine contents of Coke, Diet Coke and other beverages and tells you how it could affect your health.