Practice Reading & Listening on Caffeine
Practice Reading & Listening on Caffeine for IELTS & TOEFL with illustrated flashcards embedded in the lessons, a podcast to practice listening and text-to-speech.
Transcribed by Mortaza Mousavi
What is caffeine?
For morning coffee to afternoon tea, caffeine is so thoroughly entrenched in our daily routines, and has become the world’s most widely used psychoactive substance. Caffeine is a chemical compound that stimulates the central nervous system. It accomplishes this by attaching itself to Adenosine receptors in the brain. In doing so, it blocks Adenosine molecules, which are responsible for slowing down the central nervous system before we sleep. The result? Adenosine cannot regulate and neurons start firing. This results in a person’s reduced fatigue, and increased alertness and cognitive performance.
Side effects of caffeine consumption
Side effects many seek by consuming caffeine: Caffeine occurs naturally in coffee beans, tea leaves, cacao beans and some tree nuts. People have been consuming it for centuries, but daily consumption took off sporadically at different times in different places around the world. Coffee became popular in the 15th and 16th centuries. But cacao was used among early Mesoamerican civilizations hundreds of years earlier. Tea became popular by the 14th century in China during the Ming dynasty, but didn’t catch on in Britain until almost 400 years later.
Today, caffeine can be found nearly everywhere and more and more caffeine-infused products are hitting the shelves every day. In the United States, nearly 90% of the population has at least one caffeinated beverage every day. Up to 400 milligrams of caffeine per day or about four cups of coffee is considered safe for an adult. Too much caffeine for any one person can cause side effects, such as migraines, insomnia, nervousness and muscle tremors.
Caffeine could be lethal
One tablespoon of pure caffeine equivalent to drinking 75 cups of coffee at once can have lethal consequences. Due to this risk of caffeine overdoses, in 2018, the United States Food and Drug Administration banned the bulk sale of products containing pure or highly concentrated caffeine. While caffeine may provide great benefits, such as increased focus, alertness and energy, it comes with considerable risks just like any other substance.
Discuss some of the most important side effects of excessive coffee consumption.
Due to this documentary, migraines, insomnia, nervousness and muscle tremors are some of the side effects of excessive coffee usage.
That’s right. Thank you.
Just a reminder that ‘due to’ means because of or as a result of. In this context, it’s better to say, ‘according to’ or ‘with reference to’.
For morning coffee to afternoon tea, caffeine is so thoroughly entrenched in our daily routines, and has become the world’s most widely used psychoactive substance. Caffeine is a chemical compound that stimulate the central nervous system. It accomplishes this by attaching itself to adenosine receptors in the brain. In doing so, it blocks adenosine molecules, which are responsible for slowing down the central nervous system before we sleep. The result? Adenosine cannot regulate and neurons start firing. This results in a person’s reduced fatigue, and increased alertness and cognitive performance. Side effects many seek by consuming caffeine. Caffeine occurs naturally in coffee beans, tea leaves, cacao beans and some tree nuts. People have been consuming it for centuries. But daily consumption took off sporadically at different times in different places around the world. Coffee became popular in the 15th and 16th centuries. But cacao was used among early Mesoamerican civilizations hundreds of years earlier. Tea became popular by the 14th century in China during the Ming dynasty, but didn’t catch on in Britain until almost 400 years later. Today, caffeine can be found nearly everywhere and more and more caffeine infused products are hitting the shelves every day. In the United States population has at least one caffeinated beverage every day. Up to 400 milligrams of caffeine per day or about four cups of coffee is considered safe for an adult. Too much caffeine for any one person can cause side effects, such as migraines, insomnia, nervousness and muscle tremors. One tablespoon of pure caffeine equivalent to drinking 75 cups of coffee at once can have lethal consequences. Due to this risk of caffeine overdoses, in 2018, the United States Food and Drug Administration banned the bulk sale of products containing pure or highly concentrated caffeine. While caffeine may provide great benefits, such as increased focus, alertness and energy, it comes with considerable risks just like any other substance.
Thank you very much for your timely transcription.
There are some minor errors in your transcription:
1. … compound that stimulate(s) the central nervous system
2. nearly 90% of the population has … (this part has not been transcribed)
As it said , drinking caffeine allot have consequences , one time,one of the part of my family was figured that caffeine is good but he wasn’t know about this and drink alot and…
SOMTHING REALLY BAD HAPPENED.
Oh, That is worrisome! Consuming caffeine excessively could be really dangerous, almost like anything else. It can radically increases heartrate and hyper-vigilancy. Excessive caffeine can terribly disturb your sleep patterns, as well.