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Caffeine & Heart Disease

Caffeine is a natural component found in coffee, tea, soft drinks, chocolate and some food products, including nuts. Although many studies have been completed to test the effects of caffeine on heart disease, the results are still inconclusive, and the American Heart Association argues that more tests are necessary before an official statement can be made.

  1. Features

    • Caffeine is naturally found in coffees and teas, and these products often boast the highest levels of caffeine. Other food items, including nuts, dark sodas and chocolate, also contain caffeine, though these levels vary.

    Metabolic Effects

    • There are many natural metabolic effects of caffeine. One effect is that caffeine stimulates the central nervous system. The product also releases free fatty acids from fatty tissue, and caffeine also affects the kidneys by increasing urination, which may lead to dehydration if not consumed with water.

    Caffeine and Coronary Heart Disease

    • Researchers with the American Heart Association are still unclear whether caffeine increases the risk of coronary heart disease; however, the stimulant appears to affect blood pressure in those who consume it regularly, which may affect the heart and increase the likelihood of heart disease. Many studies have shown that people who regularly consume caffeine have a higher average blood pressure than those who do not consume it at all, however additional studies show that some people may develop a tolerance to caffeine which works to reduce blood pressure. Because effects may vary, it is important to monitor your blood pressure regularly when consuming large quantities of caffeine.

    Expert Insight

    • Although many studies have been completed to test the effect of caffeine on the risk of developing coronary heart disease, the American Heart Association considers these results inconclusive and conflicting. Dietary factors and lifestyles may play a role in these findings, as may improper or inconsistent testing.

    Effects of Caffeine Withdrawal

    • Although the effects of caffeine on the heart are unknown, research shows that people who consume caffeine may suffer from caffeine withdrawal 12 to 24 hours after consuming the product. These symptoms often include anxiety, fatigue, drowsiness and depression.

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