Caffeine Essay

White PJ & Nguyen TT. 2002. _Chronic Caffeine Treatment Causes Changes in Cardiac Adenosine Receptor Function in Rats_. 65,3, 129-135.

Caffeine is a wildly use drug in today’s society. Caffeine is a methylated xanthine which acts as a mild central nervous system stimulant (MS & RL, 2001). It is a stimulant which acts upon the central nervous system and increases alertness, wakefulness and restlessness and it increases the release of catecholamine from renal medullar (Fernandez, 2016; Collines, 2007). It is present in many beverages. Caffeine is found in coffee, tea, soft drinks, products containing chocolate (cocoa) and some medication (Collines, 2007). It is used as a cardiac and respiratory stimulant (Collines, 2007).Caffeine is the most frequently ingested pharmacologically active substance in the world (Collines, 2007).

Caffeine is a huge component in pre-workout supplements, and is probably the one ingredient that is most controversial. Chemically, caffeine does promote alertness and focus, but the long-term effects and other side effects are what scare most people away from taking additional caffeine to what many people already take on a daily basis. When someone gets tired, it is because of a chemical called adenosine. Adenosine builds up in the brain whenever you are awake, and it binds to adenosine receptors on brain cells. The binding of adenosine causes drowsiness by slowing down nerve cell activity. To a nerve cell, caffeine looks just like adenosine, so caffeine is able to bind to the adenosine receptors in your brain. However, caffeine does not slow down the cell’s activity like adenosine would. The cell cannot “see” adenosine anymore because caffeine is taking up all the receptors adenosine binds to,

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”

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

Every day, people all over the world begin their days with a cup of coffee, or some other form of caffeine to give them the energy “boost” that gets them going. In recent years, caffeine is becoming more common and easier to consume with the abundance of energy drinks on the market. This use of caffeine is widely known and taken advantage of, however, caffeine can have some other important effects on our brains as well, including being used in medicines that need to be sent to the brain. Caffeine also has the ability to provide a boosting benefit for the brain, both in the short term and the long term, by interacting with numerous chemical pathways, especially those involving adenosine, in the brain, typically by inhibitory effects.

Caffeine can affect our sleep. According to Brian,, Bryant, and Cunningham, When adenosine is produced in the brain, it binds to adenosine receptors. This triggers drowsiness by slowing down nerve cell activity. This also causes blood vessels to dilate in the brain. Caffeine appears like adenosine to a nerve cell and binds to the adenosine receptor. However, the caffeine doesn’t slow down the cell’s action like adenosine would. Because of this, the cell can’t recognize adenosine due to the caffeine taking up all the receptors that adenosine would typically bind to. This makes the nerve cells go faster.

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

Studies have also shown that caffeine reactions in the brain are based on the localization of adenosine receptors, dopamine receptors, and the amount of caffeine.

Caffeine is the most widely used psychoactive stimulant. It is a naturally occurring substance which can be found in the coffee bean, tea leaf, cocoa bean and kola nut and is most commonly found in beverages including coffee, soft drink and tea. According the current research, adults have increased their daily caffeine intake in recent times, and it is becoming more common. With this being the case, the effects that caffeine can have on the adult brain are vital to be aware of, as not only are there benefits,

Many people consume caffeine, some consume multiple servings and various forms of caffeine throughout their day, and it is estimated that more than 85% of Americans consume some form of caffeine every day. Caffeine consumption ranges from being the first thing people drink in the morning, to a late afternoon or evening pick me up; this is mainly due to the fact that caffeine is a stimulant which effects cortisone and adrenaline production both of which the body produces as a reaction to stress. Caffeine is a psychoactive drug and is the most frequently consumed stimulant worldwide. Stimulants are chemicals that heighten the bodies’ nervous and physiological activities such as blood pressure, awareness, heart rate, energy, and

Thesis: Caffeine can have many different effects on the body depending on the amount of consumption.

Caffeine has a huge effect on the body and mind. It can lead to a kind of addiction. Many people feel like they need caffeine to function in their daily routine. Without caffeine in their system their body may begin to shut down. The most popular beverages in the United States, such as coffee, tea, and soda, contain significant amounts of caffeine. Caffeine is a stimulant and the most commonly used drug in the world. Every day, millions consume it to increase wakefulness, alleviate fatigue, and improve concentration and focus. Other stimulants may have the very similar effects on the body, the symptom similarities are uncanny.

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).

One of the most popular and convenient drugs in the world is consumed by most americans every single day. When drinking a hot cup of coffee in the morning, having a cold glass of soda in your lunch, or sitting down for dinner with your relaxing cup of tea, many fail to realize the main addictive ingredient in all three of these beverages is caffeine. Caffeine is something most people overlook in their daily lives and can be harmful if taken too much. Typically, the majority of not only adults, but more recently a growing number of teenagers, rely on their daily dose of caffeine to get them through the day in hopes to not get a sense of fatigue. “Eighty three percent of adults can’t imagine life without their favorite cup of java.” (Healthy