Portland Observer, December 28, 1983 Page 7
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Moderate
caffeine use
not a health
hazard
Caffeine, one o f the world's most
widely used drugs, has stimulated
questions about its ultimate safety
but "available data do not seem to
support a judgment o f hazard to
mankind from moderate intake,”
according to the Institute of Food
Technologists.
"C affeine is a natural component
o f some 63 species of plants, includ
ing coffee, tea, cola and cocoa, and
is included in many over-the-coun
ter medications," said Jane W yatt,
Oregon State University food sci
ence and regional communicator of
the institute.
Despite its long history of use,
caffeine has come under suspi
cion in recent years as a health haz
ard, said W yatt. Depending on the
dose, caffeine can increase the
heartbeat and basal metabolic rate,
promote secretion o f stomach acid
and step up the production o f urine.
" I t acts to dilate some blood ves
sels, to constrict others, and to in
crease the capacity for muscular
w o rk," said W yatt. Its overall effect
is often described as a lift but a lift
only back to an original level of per
formance— so it is not a true stimu
lan t."
In a report by the IF T Expert
Panel on Food Safety and N u tri
tion, caffeine is described as being
distributed throughout all body flu
ids shortly after foods containing it
are ingested The distributiup cx-
lends to the reproductive system,
and caffeine also is ab
absorbed into
the milk of lactating mothers.
“ The time required for the body
to eliminate half the caffeine which
has been introduced is less than
three hours in children and smokers,
from three to seven hours in non
smoking adults and up to 13 hours
tor women on the pill. Pregnant
women may take from 18 to 20
ours to metabolize half the caf-
leine ingested, but their metabolism
usually returns to normal within a
month after delivery.
"There is no persuasive evidence
that moderate amounts o f caffeine
are harmful to the average healthy
adult,” the IE T panel reported.
"Excessive consumption, however
(more than 1,000 milligrams a day.
the equivalent o f about 10 cups of
strong brewed coffee) may lead to
caffeinism, sometimes referred to as
•coffee nerves,’ especially if con
sumed in a short tim e.”
It would take a considerable
quantity of caffeine to cause poison
ing,an estimated 100 cups o f strong
brewed coffee or 200 cans of cola
beverage consumed within a half
hour, the panel reported. Only eight
fatalities from caffeine poisoning
have been reported in the English
language literature, none of them
from food.
The IF T panel also reviewed sci
entific studir on caffeine in relation
to a variety o f bodily ills, including
ulcers and heartburn, cardiovascu
lar disease, cancer,
fibrocystic
breast disease and birth defects.
“ In general, the studies showed
substantial variation, with little ac
tual solid agreement as to dangers
from caffeine to human subjects at
levels normally consumed,” said
W yatt.
Said W yatt. "F o r the bulk o f the
population, caffeine has had a long
history o f safe use by humans and
scientific studies conducted indicate
that mankind will suffer no harm by
consuming currently available caf
feine-containing beverages in mod
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