Katrine Luck
Dr. Napier
ENC1102-Writing About Texts
15 April 2016
Liquid Energy: Examining the Health Effects of Coffee Americans love coffee. People all around the world have enjoyed this wonderful beverage for centuries. From the very strong brews of Cuba, Turkey, and Italy, to the American Lattes and Café Mochas, the love of coffee is pancultural. We as Americans are very enthusiastic in our obsession with this delicious and sometimes addictive drink. According to the Harvard School of Public Health, “54% of Americans over the age of 18 drink coffee every day,” and “Americans drink an average of 3.1 cups of coffee a day and the average size of a cup is 9 oz.” (Harvard School of Public Health News, 2016). Many towns in the United States
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According to Joseph Stromberg in an article for the Smithsonian,
Structurally, caffeine closely resembles a molecule that’s naturally present in our brain, called adenosine (which is a byproduct of many cellular processes, including cellular respiration)—so much so, in fact, that caffeine can fit neatly into our brain cells’ receptors for adenosine, effectively blocking them off. Normally, the adenosine produced over time locks into these receptors and produces a feeling of tiredness (Stromberg, 2013).
He goes on to explain that over time, the habitual coffee drinker’s brain creates more adenosine receptors to try to maintain some sort of balance, which is what creates the tolerance, and the subsequent increase in coffee consumption to maintain the same benefits for many coffee drinkers (Stromberg, 2013). Many of the side effects of coffee withdrawal are well known, including headache, lethargy, and a sort of mental fog, the feeling of being not quite up to par, mentally. Knowing the cellular process occurring in the brain during and after the ingestion of coffee helps to explain these symptoms. Over caffeinating, which sometimes occurs when a person drinks too many cups of coffee in too short a period of time, has many adverse effects on the human body. According to the University of Michigan University Health Service, negative effects of over
Can someone tell me why they drink coffee? Well, most people think of it as a powerful drink that gives them energy whenever they need it. I am here to tell you that coffee works a lot differently than most of us think. It does something completely different than what you might expect to your body. And coffee is not the same for everyone, to some living things it’s even poisonous. Even its name is deceiving because coffee is not even a bean at all. I am not here to dissuade you from drinking coffee, but rather inform you about how coffee affects us and how our bodies deal with it. So next time when you chug down a cup you should know what you’re doing to your body.
Caffeine affects the central full of nerves combination of parts to form a whole, allowing the material part to battle off tiredness, grow reminiscence and advance the knack to converging-point. One cup of coffee also contains a fullness of nutrients, including riboflavin, pantothenic sharp, manganese, potassium, magnesium and niacin. Additionally, caffeine has been found to subside the jeopardy of diabetes (emblem 2) and knock, and countenance against cardiovascular ail. The destruction of coffee also has been found to help countenance against Alzheimer's Ail and Insanity and Parkinson's Ail. Espresso has likewise been observed to be proactive against a few tumors, including liver and colorectal growth. So quiescence unquestionable enjoying a cup of coffee may not only please your try the flavor of buds, but better your overall freedom from disease as
Central Idea: Caffeine can be found in many places and comes in many forms. It can major effects on our body and we can experience major withdrawal symptoms.
Various countries consumed caffeine containing plants as a source of energy in the past, while still being unaware that the compound within the plants was causing the stimulating effects. In 1819, Friedlieb Runge discovered and isolated caffeine, which gave rise to the production of new caffeine containing products. Most individuals today consume caffeine in the form of coffee because of its’ ability to decrease fatigue and drowsiness. Although caffeine is soluble in water at room temperature, the molecules will not completely dissolve; therefore, coffee is made with hot water to dissolve a greater quantity of the caffeine molecules. Caffeine produces its’ stimulating effect by interfering with adenosine, a chemical in the nervous system that releases signals to notify the body when sleep is needed. Adenosine is a by-product of brain function and it will accumulate in the body throughout the day. Eventually adenosine levels will reach a maximum, causing adenosine to start binding to receptor sites to notify the brain to slow down cellular activity. Caffeine and adenosine are both alkaloids (organic compounds composed of many nitrogen atoms) with similar shapes, ring structures and covalent bonds, which allows caffeine to bind to adenosine receptors. Caffeine will occupy all adenosine receptor sites, causing the brain to maintain cellular activity and not induce
face many dangers of caffeine abuse and even overdose. Overdosing can cause many health issues
Your brain can adapt to regular consumption of caffeine. If your adenosine receptors are perpetually clogged, your body will manufacture extra ones. That way, even with caffeine around, adenosine can still do its job of signaling the brain to power down. That’s why you may find you need to consume more and more caffeine to feel as alert: there are more and more adenosine receptors to block. It’s also why, if you suddenly quit caffeine, you may experience an unpleasant withdrawal. With plenty of receptors and no competition, adenosine can work overtime, causing symptoms like headaches, tiredness, and depression.
Adenosine binds onto receptors on the brain cells, which causes people to feel the tiredness and laziness; however, because the two molecules are very similar, caffeine too is able to block the receptors. The excess adenosine is converted into adrenaline which most people are used to experiencing when drinking coffee, a sense of alertness and energy for about 4 – 6 hours. It also helps the natural stimulants work better, so, in a way, caffeine is a stimulant for stimulants. All of this information culminates in the fact that these stimulants that are activated due to the caffeine are what cause the heart to beat rapidly, either too fast for the daphnia to survive, or just enough that they are more active, like humans are when ingesting caffeine. Caffeine also causes hunger as the body is in an “overdrive”
Firstly, when drinking caffeinated drinks or anything that contains it the caffeine goes through the blood stream and directly to the brain. When we drink coffee, caffeine binds to our brain's adenosine receptors, stopping the chemical from binding with the receptors and making us tired. For the ones who regularly drink coffee in plentiful amounts, their brains develop more adenosine receptors, so it takes more coffee to keep us awake. That explains also why when we try to lay off the coffee a tad its very tiring to us because, were so use to that adenosine going to the brain. Whenever you’re awake, a chemical called adenosine slowly accumulates in your brain.
Jenna has been using coffee in a large amount everyday (1 cup in the morning, one in the afternoon and two or more in the evening) therefore her body has build up a resistance to caffeine ingredient. As we know, caffeine binds to adenosine receptors to reduce drowsy feeling, however, after a while of using coffee, the brain of Jenna keep creating more and more adenosine receptors, which also means she will need more and more caffeine to keep her awake. Alex also uses coffee, but he does not use as much as Jenna and his brain has not develop much more adenosine receptors, therefore he only needs a limit amount of caffeine to keep him awake. Sally uses stress as her motivation instead of coffee, so she does not have a habit of using caffeine and her brain does not need caffeine to stay awake
Just as there are positive effects from caffeine there are also negative effects. Caffeine is addictive. If you are a dedicated daily coffee drinker and one day decide to give it up you will have withdrawal side effects which could include: headaches, anxiety, agitation, and restlessness.
Coffee is a popular drink that many people rely on to start their day and give them a pick me up throughout it. Simply smelling the rich aroma of the roasted beans brewing in the morning is enough to start getting a person to feel more alert and prepared. When that first cup is consumed and kicks in it gears a person up and gets them motivated for action. However, what they may not know is that by consuming 2-3 cups of this aromatic beverage a day they may be providing preventative health benefits on a mental and physical level. These benefits have been documented by researchers in scientific fields based on conducting studies.
Caffeine, or 1,3,7-trimethylxanthine, is a psychostimulant which, just like other classical psychostimulants, such as cocaine and amphetamines, increases motor activity, induces arousal, and creates reinforcing effects (Griffith & Woodson, 1998). It has multiple side effects which are produced by many biological mechanisms, the most important one being the inhibition of adenosine receptors (Green & Stiles, 1986).
Caffeine has many negative effects on humans, such as increased heart rate (Lane, J.D., 2002), depression (Goldstein, 2008), and addiction to this “drug.” You may be asking yourself, “What is caffeine?” Well, caffeine is actually a stimulant (Barone, Roberts, 2008) that is found in beverages such as tea, coffee, and soft drinks. In fact, caffeine is the highest grossing and most used stimulant in the United States (Barone, Roberts, 2008). It is estimated that 85% of adults living in the United States consume caffeine on a daily basis (Barone, Roberts, 2008). That means for every 100 adults, 85 of them have had a drink that contained caffeine on any given day. One reason caffeine is so widely available compared to other stimulants is
Caffeine addiction has caused many people to gain more and more diseases throughout our nation. Caffeine, is a stimulant to the central nervous system, and regular use of caffeine does cause mild physical dependence. “The brain of people who consume caffeine can be addicted because it is used to operating in one set of conditions that depend on the ingestion of caffeine” (Stromberg). According to Stromberg, “Caffeine closely resembles a molecule that’s naturally present in our brain, called adenosine, Normally, the adenosine produced over time locks into these receptors and produces a feeling of tiredness.” When people decide to withdraw caffeine it usually gives them headaches, affect their sleeping behaviors, cause nausea, and feel flu like symptoms. According to Science behind food and cooking in the kitchen,“People have used caffeine since the Stone Age. Early people groups found that biting the seeds, bark, or leaves of specific plants had the impacts of facilitating weakness, empowering mindfulness, and hoisting mind-set. Just considerably later was it discovered that the impact of caffeine was expanded by soaking such plants in high temp water. Many societies have legends that characteristic the revelation of such plants to individuals living a huge number of years in the past. According to Newport Academy, “A lot of adults and teenagers consume coffee, tea or other caffeinated products without realizing that they’re chemically dependent on this substance. But if
Over a period of time, we become insensitive to caffeine. But the symptoms of caffeine withdrawal are far more intense. Adenosine acts as a significant role as a cerebral vasodilator. It supports our brain to get oxygen by spreading the pathways, an important rule when we are sleeping (see the connection?). When all that adenosine comes back overflowing, blood is permitted to go rushing up to our brain.