Caffeine is a naturally occurring stimulant found in the leaves, seeds, and fruit of many plant species including coffee beans, tea leaves, and cacao seeds. If you’re a part of the 83% of US adults that enjoy starting the day with a cup of coffee but want to limit your daily intake of caffeine due to personal preference, sensitivity to caffeine, or pregnancy, decaffeinated coffee may be an excellent choice for you. Here are five common decaf coffee questions answered.