Caffeine 3


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The Harvard Study

 

One of the most commonly known studies that involves testing caffeine is the Harvard study. They conducted research on 126,000 over a period of 18 years. The findings have indicated that those who drink on average one to three cups of coffee per day are 9% less likely to contract diabetes than those who don't. Also, for the subjects who drank on average six or more cups of coffee per day, the males chances reduced by 54% of contracting diabetes and the females 30%. Of course people do not view caffeine especially found in coffee as a drug, but when you consume it on a daily basis and are unable to function without it shouldn't it be considered one?


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Adenosine

 

Adenosine is produced in the receptors of your brain. As it it being made it meshes together with the receptors which causes drowsiness because it slows down your nerve cell activity. This also causes your blood vessels located inside of your brain to dilate allowing more oxygen to get into the brain as you as sleep. The brain's nerve cells are unable to detect the difference between caffeine and adenosine, since caffeine is able to bind with the adenosine receptors. The difference between the two is that adenosine slows down your brain receptors while caffeine does not and causes the nerve cells to accelerate. It also causes the blood vessels in the brain to constrict this is why caffeine can help with headaches. Due to the acceleration of the nerve cells, the pituitary gland releases hormones that produce adrenaline. 

 

The effects of adrenaline on your body include:

 

-pupils dilate 

 

-your body's airway opens up 

 

-heart beat increases

 

-blood pressure rises 

 

-liver releases sugar to bloodstream for more energy

 

-muscles tighten 

 

This is why after you drink a cup of coffee you feel tense and jittery. Your body wants more of it because it blocks the adenosine receptors so you always feel alert and injects adrenaline into your system so you always have energy. What college student wouldn't want that? 

1 Comment

Hi again! Hahah, after reading your bit on adenosine this totally explains why myself and many others genuinely crave coffee. I didn't realize how related caffeine was to adrenaline. Do you think it's bad for coffee consumers? Is there a study out there that explains if the effects are adverse? Thanks :)

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