Caffeine, an addictive chemical found in coffee, tea, colas, chocolate, and some pain relievers, acts as a stimulant in your body, increasing heart rate, blood pressure, and alertness. While moderate caffeine consumption—two or three cups of coffee per day—is not harmful, extremely high amounts can cause heart palpitations, insomnia, and anxiety. Even moderate amounts of caffeine can cause dehydration, so it’s best to avoid caffeine containing liquids on hot days or when exercising vigorously. Many studies have been done to see if any link exists between caffeine and heart disease, but results have been inconclusive. Moderate caffeine consumption does not appear to be harmful. If you would like to reduce your caffeine intake, do so gradually. Stopping caffeine abruptly can lead to withdrawal headaches. Start reducing your caffeine intake by mixing increasing amounts of decaffeinated coffee in with your regular brew. Substitute juice or sparkling water with a twist of lemon or lime for caffeinated sodas.
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