Caffeine is perhaps the most widely consumed psychoactive stimulant in the world, present in coffees, teas, energy drinks, chocolate, soft drinks, and even in some non-prescription drugs. Caffeine increases activity in your brain and nervous system as well as increasing the circulation of chemicals such as adrenaline and cortisol in the body. This isn’t to say that caffeine is bad for you. It isn’t… in small doses where it can make you feel refreshed and focused. In large doses though, it can make most people feel anxious and have a hard time falling asleep. Like many other drugs, it is possible to develop a tolerance to caffeine which means you increase your intake gradually to feel the symptoms. Caffeine is deftly absorbed by the body, the short-term effects usually experienced between 5-30 minutes after swallowing it. These effects can include heightened breathing and heart rate as well as increased mental alertness and physical energy. Depending on the individual and the amount of caffeine ingested, these effects can last up to 12 hours. Some of the signs and symptoms of having too much caffeine can include a rise in body temperature, frequent urination, dehydration, dizziness, headaches, rapid heartbeat, restlessness, excitability, anxiety, irritability, trembling hands, and sleeplessness.
With the emergence and growing popularity of coffee shops, it’s important to control your caffeine intake. How you react to caffeine depends on your body mass, health, and metabolism but research suggests that 400mg per day or less is an acceptable dose of caffeine for
the general population.
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