Health Tip: Caffeine Facts

(HealthDay News) - Caffeine, the natural substance found in many foods and beverages including coffee, tea and chocolate, can cause symptoms that can vary widely from person to person.

This is known as "caffeine sensitivity," which refers to how much caffeine a person can consume before experiencing side effects.

Here are some common side effects of caffeine, courtesy of the U.S. National Library of Medicine:

• Rapid or increased heart rate.

• Frequent urination.

• Nausea and vomiting.

• Restlessness and insomnia.

• Anxiety and depression.

• Shakiness or tremors.

If you have any of the symptoms occurring regularly, you should check with your physician. Your caffeine tolerance may be less than you think.