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Microsoft word - inflexxionthe buzz on caffeinea.doc
The Buzz on Caffeine: How Caffeine Affects Your Health
If you entered your college years without acquiring a taste for caffeine, late nights
studying may kick off a caffeine habit. But what exactly is the deal with caffeine?
Is it a harmless habit or something to worry about? What is caffeine?
Caffeine is a natural stimulant found in coffee, tea, chocolate, many soft drinks and
some medications. It’s estimated that about 80% of the US population consumes some
form of caffeine daily. The average American consumes about 230 milligrams of
caffeine a day, about what is found in two 12-ounce cups of brewed coffee. The effects
of caffeine kick in within about 15 minutes of ingesting it, and last for several hours. How does caffeine affect your body?
Caffeine has three main physiologic effects:
Stimulates your central nervous system Causes fat to be released from your fat stores (although unfortunately not enough
Causes your kidneys to release more urine
Because of its affects as a stimulant, caffeine can make you feel more alert, but in excess
can cause restless “jitters” and difficulty sleeping in susceptible people. It may also
cause your heart to beat faster and make you feel nervous and irritable.
Some research suggests that too much caffeine may also raise blood pressure, particularly
in those who don’t regularly use it. Those who do regularly consume caffeine seem to
develop a tolerance to it, however, so the blood pressure elevating effects of caffeine may
not be lasting.
Because caffeine is a diuretic, which means it causes you to urinate more, beverages
containing caffeine are not the best hydration fluids for exercise. Is caffeine bad for your health?
No scientific evidence has linked moderate caffeine use to any health problem, including
cardiovascular disease, fibrocystic breast disease, cancer or birth defects. There is some
concern that excessive caffeine intake may sap your bones of calcium. One study of
older women found that an intake of about three cups of coffee a day lead to bone loss in
the spine. Very high caffeine intakes (roughly the equivalent of 6 or more cups of coffee
per day) may be linked to higher rates of miscarriage and headaches.
One thing’s for certain, aside from tea, which does offer some health benefits, caffeinated
foods and beverages offer little positive nutrition, which alone should be a reason to limit
them. To play it safe, many doctors recommend limiting caffeine to about 200
milligrams per day, or the amount found in roughly two 12-ounce cups of coffee. See
“Caffeine Countdown” below for a caffeine comparison of different foods and beverages.
What happens when you stop using caffeine?
If someone with a sizable caffeine habits decides to cut back, certain uncomfortable
symptoms are likely to occur. Caffeine is an addictive substance, and without it you’re
likely to get a pretty decent headache if you cut it out cold turkey. You may also feel
anxious, tired and depressed. Caffeine withdrawal usually resolves within about 24 to 48
hours of your last “dose.” It may be possible to lessen withdrawal symptoms by
gradually cutting back on caffeine one dose at a time.
Average Milligrams (mg)
Coffee (8ounce cup)
DISEASE MANAGEMENT IN A PARROT COLLECTION DR C. C. KINGSLEY Curriculum Vitae Christopher Charles Kingsley EDUCATION: - Matriculated from Springs Boy’s High School 1969. Completed BSc (hons) degree in Zoology from University of Natal 1974. Completed BVSc degree from University of WORK EXPERIENCE:- National Military Service 1970. 1975-76 Mixed farming in Eastern Free State. 1976-79 Insura
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