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Health Tip: Understanding Caffeine

(HealthDay News) -- Many people won't start the day without a cup of coffee.

Caffeine, the stimulant found in coffee, isn't harmful for most people who drink 400 milligrams (mg) or less each day, the U.S. National Library of Medicine says.

The average 8 oz. cup of coffee contains 95 to 200 mg of caffeine, while a 12-ounce energy drink contains 70 to 100 mg.

If you're pregnant, breast-feeding or have conditions including anxiety, ulcers or irregular heartbeat, you probably should limit intake or avoid caffeine altogether, the agency advises.

Here's the NLM's assessment of how caffeine affects the body:

  • It stimulates the central nervous system, which can make you feel more awake and give you a boost of energy.
  • It is a diuretic, which helps your body get rid of extra salt and water by causing you to urinate more.
  • It increases the release of acid in your stomach, which can trigger an upset stomach or heartburn.
  • It may interfere with the body's absorption of calcium.
  • It increases blood pressure.

Copyright © 2018 HealthDay. All rights reserved. URL:http://consumer.healthday.com/Article.asp?AID=735732

Resources from HONselect: HONselect is the HON's medical search engine. It retrieves scientific articles, images, conferences and web sites on the selected subject.
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Disclaimer: The text presented on this page is not a substitute for professional medical advice. It is for your information only and may not represent your true individual medical situation. Do not hesitate to consult your healthcare provider if you have any questions or concerns. Do not use this information to diagnose or treat a health problem or disease without consulting a qualified healthcare professional.
Be advised that HealthDay articles are derived from various sources and may not reflect your own country regulations. The Health On the Net Foundation does not endorse opinions, products, or services that may appear in HealthDay articles.


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