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
•Make you jittery and shaky
•Make it hard to fall asleep or stay asleep
•Cause headaches or dizziness
•Make your heart beat faster or
cause abnormal heart rhythm
Cause stomach upset
Cause dehydration
•Make you dependent on it so you need to take more of it. If you stop using caffeine, you could get withdrawal symptoms.
Some people are more sensitive to caffeine than are others. If you're susceptible to the effects of caffeine, just small amounts even one cup of coffee or tea may prompt unwanted effects, such as restlessness and sleep problems.
How you react to caffeine may be determined in part by how much caffeine you're used to drinking. People who don't regularly drink caffeine tend to be more sensitive to its negative effects. Other factors may include body mass, age, medication use and health conditions such as anxiety disorders. Research also suggests that men may be more susceptible to the effects of caffeine than women. Pregnant and nursing women should reduce the intake of caffeine
Certain drugs and supplements may interact with caffeine and cause health problems. If you have questions about whether caffeine is safe for you, talk with your health care provider.
ADEQUATE NUTRITION, HEALTHIER SOCIETY.
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
•Make you jittery and shaky
•Make it hard to fall asleep or stay asleep
•Cause headaches or dizziness
•Make your heart beat faster or
cause abnormal heart rhythm
Cause stomach upset
Cause dehydration
•Make you dependent on it so you need to take more of it. If you stop using caffeine, you could get withdrawal symptoms.
Some people are more sensitive to caffeine than are others. If you're susceptible to the effects of caffeine, just small amounts even one cup of coffee or tea may prompt unwanted effects, such as restlessness and sleep problems.
How you react to caffeine may be determined in part by how much caffeine you're used to drinking. People who don't regularly drink caffeine tend to be more sensitive to its negative effects. Other factors may include body mass, age, medication use and health conditions such as anxiety disorders. Research also suggests that men may be more susceptible to the effects of caffeine than women. Pregnant and nursing women should reduce the intake of caffeine
Certain drugs and supplements may interact with caffeine and cause health problems. If you have questions about whether caffeine is safe for you, talk with your health care provider.
ADEQUATE NUTRITION, HEALTHIER SOCIETY.
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