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Coffee is one of the most popular drinks in the world. Many people choose to drink coffee, not only because of its unique flavor, but also for the caffeine that can "last" in coffee.

It is generally believed that when we drink coffee, our central nervous system gets excited, which increases alertness, makes people think more clearly, and increases attention.

But that's just what coffee does to people. For some other animals and plants, coffee may have more magical or dangerous effects.

Do animals become more awake like people after drinking coffee? | Giphy is troublesome to investigate the effects of caffeine on animals. It is necessary to observe their behavior and measure their physiological characteristics, especially for small invertebrates. However, there is an animal in the eyes of scientists, has a unique advantage, it is a spider.

If you want to observe the situation of spiders after drinking coffee, scientists suggest that you can look at the patterns of cobwebs directly.

Great changes have taken place in cobwebs after drinking coffee. | in Wiki1948, pharmacologist Peter Witt made spiders drink 10 μ g of caffeine and found that the web made by spiders became smaller and the radius became uneven. When the spider drank 100 μ g of caffeine, the shape of the web changed greatly and looked very irregular.

This suggests that caffeine has an effect on spiders, and the higher the dose, the more significant the effect may be. The use of spider web patterns as a statistical tool has also become a simple drug detection method.

When spiders take different drugs, the webs will be different. | Wiki for invertebrates like spiders, the effect of coffee on the nervous system can be fatal. When scientists let a ubiquitous moth larva (tobacco diamondback moth larva) drink high concentrations of tea or coffee, the larvae were killed within 24 hours.

When mosquito larvae drink coffee, their movements become incongruous and eventually drown because they are unable to swim to the surface.

Mosquitoes can't walk after drinking coffee. | Giphy, however, could this be a good thing for plants? Some plants have caffeine in their roots, which can be used as a "natural pesticide" to kill some insects. Moreover, caffeine can also inhibit the growth of other plants and gain a chance of survival.

Besides, plants can really drink coffee. An appropriate amount of coffee or coffee grounds is a source of nitrogen for plants (nitrogen content is about 2%), and can also provide them with trace elements such as calcium and magnesium.

But don't forget to dilute the coffee before watering the flowers, or your flowers will look like the one below. After all, high concentrations of coffee, whether animal, plant or human, are unbearable.

↑ | Quora screenshot after watering flowers with espresso the pet owner may know that for dogs and cats, coffee can significantly change the heart rate and respiratory rate, which can be life-threatening; for parrots, it can damage the digestive system; coffee can also give frogs a heart attack and inhibit snails from eating. It seems that although coffee means more sobriety for humans, caffeine is difficult for animals to metabolize and can be life-threatening.

Can coffee only be a human drink? This view soon proved to be one-sided, because there are also some animals enjoying the positive effects of coffee.

The study found that when the horse drank coffee, the heart rate increased significantly, showing extraordinary endurance, jumping ability and speed. And, like people, horses are less tired after drinking coffee.

But because of this, caffeine has also become a "stimulant" in horse racing. Because it can change the performance of horse racing, it has been designated as an illegal drug by the authorities. And the same situation also appeared in pigeon racing.

A horse can run more laps after drinking coffee! | Pixabay honeybee also tasted buff given by caffeine. Some scientists have found that bees taste caffeinated nectar (such as citrus flowers), which seems to improve memory.

Bees who drank coffee honey tripled their ability to remember the smell of flowers after 24 hours. This means that bees can find ways to pollinate, and those flowers can reproduce more successfully!

However, the impact of coffee is often not that simple. Further research from the University of Sussex found that bees that drank coffee also danced in the hive, telling other bees where to find food and asking everyone to suck caffeinated nectar. It seems that bees are as infatuated with the taste of coffee as humans. It is still controversial whether this is a positive or negative effect on bees.

Do bees dance better after drinking coffee? | Giphy Today, scientists have not really understood the effects of caffeine on various animals, plants and even humans.

In the Stone Age, people found that chewing some unique bark or leaves can refresh the mind. In the thousands of years of development, coffee has also undergone various changes from medicines, commodities and drinks. At present, the chemical reaction of caffeine in the human body is still very complex.

The role of coffee also varies from person to person. | even if Giphy can help relieve fatigue, it is only temporary. And everyone's body size and caffeine tolerance vary, and the performance of coffee varies from person to person.

Although coffee is a delicious drink for some people, about 1/10 of people around the world have a series of physical and psychological side effects after drinking coffee.

So what does coffee mean to you?

A word of warning: for most adults, the normal dose of coffee is daily 400mg. Coffee is good, but don't drink too much.

Reference:

[1] https://www.science.org/doi/10.1126/science.6207592

[2] https://www.cell.com/trends/plant-science/fulltext/S1360-1385(01)02055-6

[3] https://www.nationalgeographic.com/science/article/how-plants-manipulate-bees-with-caffeine

[4] https://zh.wikipedia.org/zh-hans/%E5%92%96%E5%95%A1%E5%9B%A0

[5] https://pubmed.ncbi.nlm.nih.gov/19046017/

[6] https://www.thoughtco.com/chemistry-of-caffeine-608500

This article is from the official Wechat account: take Science Home (ID:steamforkids), Skin

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