Caffeine 101 | National Geographic

Caffeine 101 | National Geographic

(light liquid pouring) (gentle sipping) – [Narrator] For morning
coffee to afternoon tea, caffeine is so thoroughly
entrenched in our daily routines and has become the worlds 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 16 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 everyday. In the United States,
nearly 90% of the population has at least one caffeinated
beverage everyday. 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.

100 thoughts on “Caffeine 101 | National Geographic

  1. Caffeine has become the world's most widely used psychoactive substance. To learn more, you can read on here:

  2. Coffee drinkers in every part of history were miraculously self-centered enough to have giant mosaic selfies created of themselves all while holding their prized coffee beverages together, so we would forever know that they in fact did it before we did.

  3. This is why I tell newbie weightlifters to only take pre workout with giant qty.s of caffeine only 2 or 3 times at most a week. Any more than that and you're going to build a tolerance and dependency on it. I usually drink 1 or 2 cups of soda a month when I want something refreshing, otherwise every day I'm taking in at least 2 liters of water.

  4. Coffee is one of the most well-researched substances in the world. It has been shown to have very positive effects on the body and immune system, consistently. As we come to new understandings of the brain, we are also seeing some really hopeful signs that these doses of caffeine have measurable positive effects on the brain.
    It should be consumed in moderation. As said, most people can handle about 4 cups a day. Some people (I think I read up to a third in some studies) have a genetic mutation that allows them to process coffee very easily, and can have much more than 4 cups without negative consequences.
    I support fair trade coffee 100%. If you can, try to make sure there is no rainforest destruction or the like due to your daily brew! We can 'vote' with our dollar, here.

  5. The ending is a bit abrupt. I was really expecting something after "it comes with some risks" as to what the risks are, exactly. Not in an extreme case, but in everyday routines. Overall nice video but I'm a bit disappointed by the ending

  6. To bad this didn't talk about the medical applications of caffeine and the positive health effects of caffeine consumption. Otherwise I enjoyed the video

  7. "Newman…what are doing?"…"thinking."…"well think me up a cup of ☕ and one of those chocolate donuts with the little sprinkles in it, while you're thinking."

  8. About 20 years ago or so National Geographic had an article about all the powdered caffeine that was removed while making decaffeinated coffee and the environmental risk that this posed. Nobody knew what to do with it all.
    Shortly after that all kinds of super caffeinated soft drinks started appearing for sale… regardless of laws that stipulated how much caffeine could be put into them.

  9. but what are the risks???? that's what i came here for and you didn't even touch on the biological basis of the side effects smh

  10. PROPAGANDA. So NG is being sponsored by the coffee industry I guess. Drink this and you'll be wiser more alert and so and so. So much BS in this world. .. IT'S ALL IN THE HEAD. It's more how than what…. so obvious. But all this propaganda coming in every possible way. ……

  11. Used to drink two cups a day and later I was diagnosed with dyrrhythmia or irregular heartbeats. Slowing down on my intakes now until eventually stopping coz abruptly stopping can cause intense migraines.

  12. I really want to know the relationship between caffeine and Alzheimer and other illness. I have observed that many countries that have high caffeine intake tend to have a bigger number in these illness areas… ummm..

  13. Thanks for sharing this video and allowing me to comment before I check other comments here.
    I just think Tea has become popular in China well before the Ming dynasty and Britain traded with China for tea leaves well before Twenty-first century AD. And I am not sure if a tea spoon or a table spoon of pure caffeine could be lethal to everyone. Some are born stronger to tolerate caffeine over dose.

  14. gave up caffeine and went cold turkey and had a horrible headache for two months. After that i feel great. never drinking anything with caffeine again.

  15. Different beverages occur different side effects. Caffeine make us psychoactive and insomnia, alcohols make us drunk and faint.

  16. Look caffeine has side effects like any other substance.
    So why is caffeine legal and cocaine illegal 😉

  17. My Dad Always Drink Coffee I Told Him Not To Drink Coffee Always,He Didn't Listen.

  18. When I drink coffee in the night ,,,in the morning, my mood is off for no reason …..can anyone explain why this happens to me?

  19. I withdrew from caffeine for 2 months now.. It was very difficult but now I feel much more active and sleep better than ever. Leave caffeine, live healthy.

  20. I usually find some coffee when exam comes. We can see many people drinking a lot of cups of coffee while working during their job tume. But as we already know, caffeine is not good for our bodies, so we need to replace it with other drinks.

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