What are the health risks of too much caffeine?

Nicole Avena, PhD
Nutrition & Dietetics
Although caffeine is considered to be very safe, serious health risks like cardiovascular issues can result if you have too much of it. Watch as I explain why it's important to be aware of your caffeine intake. 
Dr. Michael Roizen, MD
Internal Medicine
For a few people, too much caffeine will increase abnormal heartbeats. If you already have a tendency to have abnormal heartbeats, caffeine may make them worse. Furthermore, if you develop benign prostatic hypertrophy (enlargement of the prostate gland that often makes older men get up and urinate several times during the night, disrupting sleep), caffeine may make it worse by causing a spasm of the urethra. So, if you have an enlarged prostate, a common condition in men over sixty, caffeine may make it more difficult to urinate. In addition, for a few people, some caffeine will cause migraine headaches, and too much caffeine will cause gastrointestinal upset.
Keri Peterson, MD
Internal Medicine
Internal Medicine Specialist Dr. Keri Peterson discusses the health risks of consuming too much caffeine. Watch Dr. Peterson's video for information on health and wellness.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.