Positive effects of natural caffeine
The positive effects of naturally occurring caffeine have made it very popular for thousands of years.
When using daily tea, coffee, mate, chocolate, and some herbs, trillions of people have felt
People have gained all this without any noticeable or measurable harm.
But too much caffeine can be risky.
There are reports of abuse, even overdoses and deaths, especially with the modern, more concentrated sources of caffeine.
Negative effects of caffeine
Negative effects of caffeine are usually called side effects.
Caffeine side effects can fall into three categories:
Temporary caffeine side effects can include indigestion, insomnia, temporary rapid heartbeat, or shaky hands.
They occur most often with vulnerable people already under medical care and require modification of caffeine intake by the treating physician according to individual health needs.
Moderate caffeine side effects in healthy people tend to be self-limiting.
People don’t like the persistent side effects, so they decide to reduce their caffeine intake (for example by switching from coffee to green tea), and the side effects resolve without damage.
Only a small percentage of hospitalizations occur with naturally occurring caffeine sources, and then only with large amounts of caffeine like 8 or more cups of coffee daily.
Today, more hospitalizations are being reported with new popular caffeinated “energy” drinks.
Overdose deaths are reported with concentrated caffeine sources like caffeine tablets.
Recommended caffeine intake
Most authorities recommend that healthy adults stay below 300-500 milligrams of caffeine daily from all sources.
Pregnant women and women trying to get pregnant must remain below 150-200 milligrams daily.
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This page was last updated by Sharon Jones on November 20, 2012.
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