Podcast
Questions and Answers
What is the main effect of caffeine on the central nervous system?
What is the main effect of caffeine on the central nervous system?
- It slows it down
- It has no effect
- It stimulates it (correct)
- It causes muscle tremors
Which molecules does caffeine block in the central nervous system?
Which molecules does caffeine block in the central nervous system?
- Dopamine molecules
- Serotonin molecules
- Adenosine molecules (correct)
- Endorphin molecules
Which of the following is a natural source of caffeine?
Which of the following is a natural source of caffeine?
- Orange juice
- Milk
- Coffee beans (correct)
- Water
When did daily consumption of caffeine take off sporadically around the world?
When did daily consumption of caffeine take off sporadically around the world?
What percentage of the US population has at least one caffeinated beverage every day?
What percentage of the US population has at least one caffeinated beverage every day?
What is the safe daily limit of caffeine consumption for an adult?
What is the safe daily limit of caffeine consumption for an adult?
What are some side effects of consuming too much caffeine?
What are some side effects of consuming too much caffeine?
How much pure caffeine is equivalent to drinking 75 cups of coffee at once?
How much pure caffeine is equivalent to drinking 75 cups of coffee at once?
What did the FDA ban in 2018 regarding caffeine products?
What did the FDA ban in 2018 regarding caffeine products?
Despite its benefits, what is true about caffeine?
Despite its benefits, what is true about caffeine?
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Study Notes
- Caffeine is a widely used psychoactive substance that stimulates the central nervous system.
- It blocks adenosine molecules responsible for slowing down the central nervous system before sleep.
- Caffeine occurs naturally in coffee beans, tea leaves, cacao beans, and some tree nuts.
- Daily consumption of caffeine took off sporadically at different times in different places around the world.
- Nearly 90% of the US 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 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.
- The FDA banned the bulk sale of products containing pure or highly concentrated caffeine in 2018.
- Caffeine comes with considerable risks like any other substance, despite its benefits.
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