The Effects of Caffeine


Lexi Knight, Writer

Positive & Negative Effects of Caffeine


  1.  ANXIETY:  Caffeine blocks the effects of adenosine (a brain chemical that makes you feel tired). However, at the same time, it releases adrenaline, commonly known as the fight or flight hormone when there’s an increase of energy. An increase in adrenaline and anxiety can cause stress. So in short, it increases alertness. The severity of these effects relies on the amount of caffeine you consume.
  2. INSOMNIA: Caffeine is meant to get you energized throughout the day when you feel tired or need more energy. Nonetheless, too much caffeine can limit the amount of sleep you get and can keep you from falling asleep. This happens if you drink caffeine before bed or later in the day, or if it just doesn’t ware off fast enough. So, in general, it can deprive you from falling asleep, causing you to get less hours of sleep.
  3. RAPID HEARTBEAT: Caffeine’s job is did get you heart to pump faster, and to get you energized and awake for the day. But high dosages of caffeine can cause a rapid heartbeat. This would especially be a problem if you already have heart issues.
  4. DIARRHEA: Excessive amounts of caffeine can cause diarrhea issues.
  5. INCREASE BLOOD PRESSURE and JITTERS: Caffeine can cause short-term heightened blood pressure, which is more noticeable if you ingest caffeine before or during an exercise. It can cause jitters if you are not used to it. If you have an anxiety or sleep disorder, caffeine will make it worse.
  6. HEADACHES: It’s very common to get headaches if your having a withdrawal, which means you typically drink caffeine but have gone without it for an extended amount of time. Headaches can be caused by quite the opposite. If you consume too much caffeine than your typical amount you’ll obtain symptoms.


  1. DECREASE RISK OF SUICIDE AND ORAL CANCER: Caffeine has its upsides too. A study done by the Harvard School of Public Health proved that the mood-enhancing effect of caffeine decreased the risk of suicide by 45% of caffeine drinkers. This study also addressed caffeine decreased the risk of oral and throat cancer for individuals who drink 4-8 oz of caffeinated coffee/day.
  2. MENTAL: Being energized from caffeine can help you study for school and improve mental functioning better. It also can help your memory!
  3. FATIGUE: Caffeine can decrease the mental and physical feeling of weakness/tired.

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