Coffee is a brewed beverage prepared from roasted coffee seeds. They are seeds of “coffee cherries” that grow on trees in over 70 countries. Green coffee is one of the most traded commodities in the world, often described as being second only to crude oil .Due to its caffeine content, coffee can have a stimulating effect in humans. Today, coffee is one of the most popular beverages worldwide. Brazil is the world leader in production of green coffee, followed by Vietnam and Colombia. Coffee drinking began in Arab regions in the 14th century but did not become common in Europe until three hundred years later, when the first coffee houses were opened in Vienna, and soon after in Paris and London. In the American colonies, coffee became the substitute for tea when the British taxed tea. Coffee is a great morning stimulant. Tea can do the same thing.
Caffeine is probably the most frequently ingested pharmacologically active substance in the world. It is found in common beverages (coffee, tea, soft drinks), in products containing cocoa or chocolate, and in medications. Because of its wide consumption at different levels by most segments of the population, the public and the scientific community have expressed interest in the potential for caffeine to produce adverse effects on human health. Caffeine, the main active chemical of coffee, blocks adenosine, a chemical that makes you naturally drowsy, increasing concentration and reaction speed. But the long term effects can be really tricky. Once the temporary stimulation stops, the brain cells start needing caffeine for stimulation and a sudden neural sluggishness installs.
What caffeine actually does is set off a stress response. It stimulates your adrenal glands to make epinephrine and nor epinephrine—the same stress hormones that are produced in response to any stressor. This sets the stress response in motion, causing tense muscles, elevated blood sugar, and increased pulse and respiration. You may feel mentally sharper because your brain is high on adrenaline. If stress hormones remain elevated, the body is thrown into a state of chronic stress. By sipping on coffee all day long, you are forcing your adrenal glands to continue to pump out stress hormones.
Coffee consumption has been shown to have minimal or no impact, positive or negative, on cancer development; however, researchers involved in an ongoing 22-year study by the Harvard School of Public Health state that “the overall balance of risks and benefits [of coffee consumption] are on the side of benefits.”[ Various other studies have shown apparent reductions in the risks of Alzheimer’s disease, Parkinson’s disease, heart disease, diabetes mellitus type 2, cirrhosis of the liver, and gout. A longitudinal study in 2009 showed that moderate drinkers of coffee (3-5 cups per day) had lower chances of developing dementia, in addition to Alzheimer’s disease . It increases the risk of acid reflux and associated diseases. Some health effects of coffee are due to its caffeine content, as the benefits are only observed in those who drink caffeinated coffee while others appear to be due to other components. For example, the antioxidants in coffee prevent free radicals from causing cell
Caffeine is the major coffee constituent affecting individual’s tolerance or intolerance. In a healthy liver, the majority of caffeine is degraded by the hepatic microsomal enzymatic system. Caffeine is mostly degraded to paraxanthine substances, partially to theobromine and theophylline, and a small amount of unchanged caffeine is excreted by urine. Therefore, the metabolism of caffeine depends on the state of this enzymatic system of the liver. Elderly individuals with a depleted enzymatic system do not tolerate coffee with caffeine. They are recommended to take decaffeinated coffee, and this only if their stomach is healthy, because both decaffeinated coffee and coffee with caffeine cause heartburn. Moderate amounts of coffee (50-100 mg of caffeine or 5-10 g of coffee powder a day) are well tolerated by a majority of elderly people. Excessive amounts of coffee, however, can in many individuals cause very unpleasant, exceptionally even life-threatening side effects.
Coffee consumption can lead to iron deficiency anemia in mothers and infants. Coffee also interferes with the absorption of supplemental iron. Interference with iron absorption is due to the polyphenols present in coffee. Although the inhibition of iron absorption can cause an iron deficiency, iron is considered a carcinogen in relation to the liver and can increase risks of hepatocellular carcinoma, more commonly known as liver cancer. Polyphenols contained in coffee are therefore associated with decreasing the risk of liver cancer development
Coffee is no longer thought to be a risk factor for coronary heart disease. Some studies suggest that it may have a mixed effect on short-term memory, by improving it when the information to be recalled is related to the current train of thought but making it more difficult to recall unrelated information. About 10% of people with a moderate daily intake (235 mg per day) reported increased depression and anxiety when caffeine was withdrawn.
So people choose what you want in your beverage!!. I personally dont drink coffee in a regular basis and during the exams when i sip few drops i don’t benefit from it and so i prefer plain water. share in your coffee stories during the exam time or any other time !
(source : Wikipedia, anti aging guide, softpedia,encyclopedia.farlex.com)