Can drinking coffee be good for health
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Can drinking coffee be good for health? Tina Gomes What is coffee? Coffee is a widely-consumed stimulant beverage prepared from roasted seeds of the coffee plant. Coffee berries are produced by several species of small evergreen bush of the genus Coffea .

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Can drinking coffee be good for health?

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Can drinking coffee be good for health l.jpg

Can drinking coffee be good for health?

Tina Gomes


What is coffee l.jpg

What is coffee?

  • Coffee is a widely-consumed stimulant beverage prepared from roasted seeds of the coffee plant.

  • Coffee berries are produced by several species of small evergreen bush of the genus Coffea.

  • The two most commonly grown species are Coffea robusta and Coffea arabica.


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Where did it originate?

  • Coffee was first consumed in the 9th century, when it was discovered in the highlands of Ethiopia.

  • It was then introduced to Egypt, from where coffee spread to Europe through thriving trade of many goods including coffee beans.

  • Coffee reached the Americas during colonial period and became a really popular beverage when import of tea from Britain was temporarily cut off during war of 1812.


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Biology of a coffee plant

  • The Coffea plant belongs to the family Rubiaceae.

  • It is an evergreen shrub or small tree which can grow up to 5 m tall.

  • The leaves are dark green and glossy, usually 10–15 cm long and 6.0 cm wide.

  • It produces clusters of fragrant, white flowers that bloom simultaneously.


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  • The fruit berry is oval, about 1.5 cm long, and green when immature, but ripens to yellow, then crimson, becoming black on drying.

  • Each berry usually contains two seeds

  • Berries ripen in seven to nine months.


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Cultivation of Coffee

  • Coffee is usually propagated by seeds.

  • The traditional method of planting coffee is to put 20 seeds in each hole at the beginning of the rainy season.

  • Coffee is often intercropped with food crops, such as corn, beans, or rice, during the first few years of cultivation.

  • Originally, coffee farming was done in the shade of trees, which caused berries to ripen more slowly making the quality of the coffee superior.


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Processing of Coffee

  • First, coffee berries are picked. Then, they are sorted by ripeness and color, and the flesh of the berry is removed.

  • The seeds are fermented to remove the slimy layer of mucilage still present on the bean.

  • When the fermentation is finished, the beans are washed with water to remove the fermentation residue. Finally the seeds are dried, sorted, and labeled as green coffee beans.

  • The next step in the process is the roasting of the green coffee.

  • Depending on the color of the roasted beans, they will be labeled as light, medium, or dark.


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Effects of Coffee on health

  • Coffee appears to reduce the risk of Alzheimer's disease, Parkinson's disease, heart disease, diabetes mellitus type 2, and cirrhosis of the liver

  • However, it increases the risk of acid reflux and associated diseases

  • The antioxidants in coffee prevent free radicals from causing cell damage.

  • Some health effects of coffee are due to its caffeine content, for example, coffee contains an unknown chemical agent which stimulates the production of cortisone and adrenaline, two stimulating hormones.


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Caffeine

  • Coffee's negative health effects are mostly due to the caffeine.

  • Research suggests that drinking caffeinated coffee can cause a temporary increase in the stiffening of arterial walls.

  • Excess caffeinated coffee consumption may lead to hypomagnesaemia and coronary heart disease.

  • Caffeine acts as a stimulant. Consumption of excessive coffee can lead to caffeine dependency and withdrawal symptoms


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References

  • http://en.wikipedia.org/wiki/Coffee_and_health

  • http://en.wikipedia.org/wiki/Coffee

  • http://images.google.com/images?um=1&hl=en&q=coffee+&btnG=Search+Images

  • http://www.health.harvard.edu/press_releases/coffee_health_risk.htm


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