Benefits of Coffee
Learn more about the health benefits of coffee:
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Antioxidants
Coffee plants contain polyphenolic compounds called flavonoids,
which have anitoxidant properties important in disease
protection. In addition to the compounds found naturally in
raw beans, new research has found that additional substances
with antioxidant activity are created during roasting (1). |
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(1). Nicoli, M.C. et
al. Lebensmittel, Wissenschaft und Technologie, 30, 292-297,
1997; Singhara, A. et al., Presentation at the American
Chemical Society national meeting, San Francisco, USA, April
1997. |
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Anxiety Sensitivity
A recent report by researchers at London's Goldsmith College
found that caffeine actually moderates anxiety in those who
are particularly susceptible. Subjects suffering from anxiety
sensitivity suffered less negative responses to their
condition after consuming coffee (1). |
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(1). Keogh, E. &
Dillon, C. Anxiety Sensitivity, Caffeine and Interpretative
Biases (Submitted). |
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Asthma
Caffeine has long been known to help asthmatics and for many
regular coffee consumption assists in moderating asthma
attacks. Scientific studies have found that three or more cups
of coffee per day significantly reduce the prevalence of
asthma (1). |
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(1). Kivity, S. et al.,
Chest, 97, 1083-1085, 1990; Pagano, R. et al., Chest, 94,
387-389, 1988; Schwartz, J., A.E.P., 2, 627-635, 1992. |
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Athletic Performance
While it has long been thought that the use of caffeine during
exercise might exacerbate dehydration, a recent study has
demonstrated that caffeine in drinks taken before moderate
exercise did not compromise hydration of the body (1). There
is also evidence that caffeine can improve athletic
performance in sports such as swimming, cycling, and tennis,
and that habitual coffee drinkers perform better in a variety
of cognitive performance tests, compared with non-coffee
drinkers (2). |
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(1). Wemple, R.D. et
al., International Journal of Sports Medicine, 18, 40-46,
1997.
(2). MacIntosh, B.R. and Wright, B.M., Canadian Journal of
Applied Physiology, 20, 168-177, 1995; Pasman, W.J. et al.,
International Journal of Sports Medicine, 16, 225-230, 1995;
Ferrauti, A. et al., Journal of Sports Medicine and Physical
Fitness, 37, 258-66, 1997. |
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Cirrhosis of the Liver
Research has shown that consumption of coffee has a strong
protective effect against cirrhosis of the liver (1). These
studies show that drinking 3 to 4 cups of coffee a day
resulted in an 80 percent reduction in the risk for cirrhosis
of the liver, compared with those who don't drink coffee at
all. |
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(1). Klatsky and
Armstrong, American Journal of Epidemiology, 136, 1248-57,
1992; Corrao et al, European Journal of Epidemiology, 10,
657-64, 1994; Sharp et al, Annals of Epidemiology, 9 (7),
391-393, 1999; Nakanishi et al, Individual Health, 38 (1),
99-102, January 2000. |
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Colon Cancer
There is strong evidence for a protective effect of coffee
against the development of colon or colorectal cancers; one
study found that the risk of colon cancer was reduced by
drinking more than four cups of coffee a day, and that this
dosage had no negative effect on the participants (1). |
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(1). World Health
Organization International Agency for Research on Cancer. IARC
Monographs on the Evaluation of Carcinogenic Risks to Humans -
Coffee, Tea, Mate, Methylxanthines and Methyglyoxal, 51, 1991;
Jacobsen, B.K. et al., Journal of the National Cancer
Institute, 76, 823-831, 1986; La Vecchia, C. et al., Cancer
Research, 49, 1049-1051, 1989; La Vecchia, C. et al.,
International Journal of Cancer, 41, 492-498, 1988; Kato, I.
et al., Japanese Journal of Cancer Research, 81, 1101-1108,
1990; Baron, J.A.et al., Cancer Epidemiology, Biomarkers and
Prevention, 3, 565-570, 1994; Tavani, A. et al., International
Journal of Cancer, 73, 193-197, 1997. |
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Depression
Two studies have found a clear and significant association
between coffee drinking and a lower risk of suicide,
indicating that coffee drinking may decrease levels of
depression (1). |
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(1). Klatsky, A.L. et
al., Annals of Epidemiology, 3, 375-381, 1993; Kawachi, I. et
al., Archives of Internal Medicine, 156, 521-525, 1996. |
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Gallstone Disease
Drinking coffee helps prevent gallstone disease in men. A
10-year study found that men who drank two to three cups of
regular, caffeinated coffee per day had a 40 percent lower
risk of developing gallstone disease than men who did not
drink regular coffee (1). This rose to a 45 percent lower risk
for men who drank four or more cups of regular coffee per day. |
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(1). Leitzmann, M. F.
et al., Journal of the American Medical Association, 281 (22),
2106-2112, 1999. |
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Heart Disease
Recent studies involving both men and women found no evidence
for a link between coffee consumption and heart disease (1),
and another study actually found a lower rate of heart disease
among coffee consumers than non-consumers (2). |
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(1).Grobee, D.E. et
al., New England Journal of Medicine, 323, 1026-1032, 1990;
Willett, W.C. et al., Journal of the American Medical
Association, 275, 458-462, 1996
(2). Brown, C.A. et al., Journal of Epidemiology & Community
Health, 47, 171-175, 1993. |
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Kidney Stones
Intakes of regular and decaffeinated coffee - as little as 8
oz. - decrease the risk of kidney stone formation in men and
women more effectively than water, while greater intakes of
apple and grapefruit juices are related to increased risk (1). |
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(1). Curhan, G.C. et
al., American Journal of Epidemiology, 143, 240-247, 1996;
Curhan, G.C. et al., Annals of Internal Medicine, 128,
534-540, 1998. |
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Nervous System
Caffeine is a mild stimulant, which acts on the central
nervous system and increases metabolic rate. Consumption of
caffeine equivalent to that found in a couple of cups of
coffee has been shown to improve alertness and enhance
concentration. Caffeine can increase the speed of rapid
information processing by 10 percent (1), and a cup of regular
coffee after lunch helps to counteract the normal ëpost-lunch
dipí in the ability to sustain concentration, aiding alertness
(2). Study results clearly demonstrate that caffeinated coffee
has a beneficial effect on alertness and improved performance
in a variety of tasks in both day and night work sessions (3),
and may even remove the malaise (reduced alertness, slower
psychomotor performance) associated with having the common
cold (4). |
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(1). Hazenfratz, M. et
al., Human Psychopharmacology, 6, 277-284, 1991.
(2). Smith, A.P. et al., Neuropsychobiology, 23, 160-163,
1990.
(3). Smith, A.P. et al., Neuropsychobiology, 27, 217-223,
1993.
(4). Smith, A.P. et al., Journal of Psychopharmacology, 11
(4), 319-324, 1997. |
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Weight Loss
Caffeine consumption leads to a temporary increase in the
metabolic rate and the rate of fat breakdown (lipolysis), and
may be of benefit in some weight loss programs (1). |
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(1). Holland, M.A. et
al., American Journal of Clinical Nutrition, 34, 2291-2294,
1981; Acheson, J. et al., American Journal of Clinical
Nutrition , 33, 989-997, 1980; Costill, D.L. et al., Medicine
and Science in Sports, 10, 155-158, 1978; Astrup, A. et al.,
American Journal of Clinical Nutrition, 51, 759-767, 1990;
Dulloo, A.G., American Journal of Clinical Nutrition, 49,
44-50, 1989. |
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