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How much is
too much?
You drink 4 or more
cups a day
Although moderate caffeine intake isn’t likely
to cause harm, too much can lead to some
unpleasant effects. Heavy daily caffeine use -
more than 500 to 600 mg a day - may cause:
• Insomnia
• Nervousness
• Restlessness
• Irritability
• Stomach upset
• Fast heartbeat
• Muscle tremors
• Even a little makes you jittery
If you rely on caffeine to wake you up and keep
you going, you aren’t alone. Caffeine stimulates
the central nervous system, alleviating fatigue,
increasing wakefulness, and improving
concentration and focus.
When to consider
cutting back
For most healthy adults, moderate doses of
caffeine - 200 to 300 milligrams (mg), or
about two to four cups of brewed coffee a day
- aren’t harmful. But some circumstances may
warrant limiting or even ending your
caffeine routine. Read on to see if any of these
apply to you.
Caffeine has its perks, but it can pose problems, too. Find out how
much is too much and if you need to curb your consumption.
May/June 2013