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Caffeine is a bitter substance found in coffee, tea, soft drinks, chocolate, kola nuts, and certain medicines. It has many effects on the body's metabolism, including stimulating the central nervous system. This can make you more alert and give you a boost of energy.

For most people, the amount of caffeine in two to four cups of coffee a day is not harmful. However, too much caffeine can cause problems. It can

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Results 1 - 10 of 746 for caffeine
  1. Caffeine (National Library of Medicine)  
    Caffeine is a bitter substance found in coffee, tea, soft drinks, chocolate, kola nuts, and certain medicines. ... of energy. For most people, the amount of caffeine in two to four cups of coffee a ...
  2. Diet - caffeine ... Caffeine is absorbed and passes quickly into the brain. It does not collect in the bloodstream or ... been consumed. There is no nutritional need for caffeine. It can be avoided in the diet. Caffeine ...
  3. Caffeine Confusion (Nemours Foundation)  
    ... Body Works Main Page The Pink Locker Society Caffeine Confusion KidsHealth > Kids > Staying Healthy > Fabulous Food > Caffeine ... cup of coffee. So what is caffeine, anyway? Caffeine Is a Common Chemical Caffeine (say: KA-feen) ...
  4. Caffeine in Pregnancy (March of Dimes Birth Defects Foundation)  
    ... this page It's been added to your dashboard . Caffeine in pregnancy Caffeine is a drug found in ... one 12-ounce cup of coffee. How does caffeine affect your body? Caffeine helps keep you awake. ...
  5. Caffeine and Your Child (Nemours Foundation)  
    ... 12-ounce (355-milliliter) can of soda. How Caffeine Affects Kids A stimulant that affects kids and ... supported by research. Continue Foods and Beverages With Caffeine Although kids get most of their caffeine from ...
  6. Caffeine and Alcohol (Centers for Disease Control and Prevention)  
    ... Alcohol and Public Health Share Compartir Fact Sheets - Caffeine and Alcohol Caffeine and Alcohol Public Health Impact of Excessive Alcohol ... Drinks Energy drinks are beverages that typically contain caffeine, other plant-based stimulants, simple sugars, and other ...
  7. The combination of ergotamine and caffeine is used to prevent and treat migraine headaches. Ergotamine is in a class of medications called ergot alkaloids. It works together ...
  8. Caffeine and Heart Disease (American Heart Association)  
    ... Fit-Friendly Worksites Program Requirements Fit-Friendly Resources Caffeine and Heart Disease Updated:Mar 17,2014 Caffeine has many metabolic effects. For example, It stimulates ...
  9. Caffeine (Nemours Foundation)  
    ... for his headphones — and some caffeine. What Is Caffeine? Caffeine is a drug that is naturally produced in ... also produced artificially and added to certain foods. Caffeine is defined as a drug because it stimulates ...
  10. Caffeine and Migraine (American Headache Society, Committee on Headache Education)  
    ... disabling headaches . Home > Caffeine and Migraine Print Email Caffeine and Migraine ACHE Newsletter Sign up for our newsletter by entering your e-mail address below. Caffeine and Migraine Robert E. Shapiro, MD, PhD and ...
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