Scientists have found a connection between mortality and coffee consumption. People who drink a cup of coffee a day have a 12 percent less chance of dying compared to people who don’t drink coffee.
Every statement raises more and more questions about this drink. What does coffee contain? Does it really give you vitality? Why do some want to sleep after it?
Let’s try to figure it out.
Coffee makes you happier
Caffeine, the most consumed psychoactive substance in the world, is responsible for the tonic effect of coffee. Caffeine fuels the central nervous system, affects nerve cells in the brain, rises alertness and reduces fatigue.
It also turned out that caffeine increases dopamine levels making people happier. For example, according to a Harvard study, women who drank from four cups of coffee per day were 20 percent were less likely to be depressed than those who preferred other drinks.
Coffee makes you sleepier
Why do you want to sleep? Well, coffee does not give you energy, but only helps you take advantage of your own resources, which, of course, are not infinite.
In addition, after some time, the body’s vulnerability to caffeine lowers, the brain generates additional adenosine receptors. So this is not a bad coffee, it’s just that your receptors have become less sensitive to caffeine.
How much can you drink?
The optional amount of caffeine is 400 milligrams per day maximum. The total of caffeine in a cup of coffee depends on numerous factors, including the time, the temperature of the water, and method of preparation (brewed, filtered, espresso or instant).
According to study by Korean scientists, the caffeine content in a cup of coffee depends on the method of preparation.
The most of it is in espresso – a serving of 30 milliliters. There are 60 to 100 milligrams of caffeine. When preparing espresso, finely ground grains are used. Due to this, the extraction of coffee in contact with water is significantly accelerated.
A cup of brewed coffee (100 milliliters) contains 70–110 milligrams of caffeine. The higher the temperature and the longer the drink is prepared, the more caffeine gets extracted.
Clean coffee (250 milliliters) normally contains 100–173 milligrams of caffeine.
Cold bru – cold-brewed coffee (not to be mixed up with coffee with ice). According to a study by Canadian scientists, 12 ounces of such coffee (approximately 355 milliliters) can contain from 153 to 238 milligrams of caffeine.
Instant coffee usually contains less caffeine than brewed and filtered. In a standard serving of instant coffee (200 milliliters), approximately 40-65 milligrams of caffeine.
It is also worth considering the variety of coffee.
According to a 2016 analysis issued in the journal European Food Research and Technology, the typical caffeine content in robusta is about two times higher than in Arabica.
So is it a friend or an enemy?
Coffee has a lot of antioxidants that shield our cells from toxins, chemicals, and inflammation.
Earlier this year, a study published in the journal Annals of Internal Medicine showed that consuming up to three cups of coffee a day reduces the risk of death from several key causes, in particular from heart disease.
Other studies have examined whether coffee can reduce the risk of developing type 2 diabetes and combat neurodegenerative diseases such as dementia and Alzheimer’s. Further research is required in these industries.
The amount of vitamins and minerals in coffee differs depending on the variety, place where it has been cultivated, processing technique and even crop protection crops used.
But in general, it seems that coffee has a positive influence on the body, but with moderate use (and remember about restrictions and contraindications). This drink improves memory, mood and overall cognitive function.
So coffee is that rare situation when business combines with pleasure.
Some interesting facts about coffee:
- Coffee trees used to reach 9 m (29 ft). Now they are cultivated so that the height does not exceed 3 m (9 ft) for the convenience of harvesting.
- Coffee is still being picked by hand. In one day, one person can collect up to 7 baskets with a total weight of up to 700 kg (1 500 lb).
- Coffee is the second most sold product in the world. In the first place is oil.
- Finland is the country with the highest coffee consumption in the world.
- The coffee industry is one of the reasons for climate change. Farmers cut down a fifth of the jungle of Brazil under the plantation. On average, a small cafe spends between 18 and 36 thousand disposable cups each year. In Germany alone, consumers throw out 320,000 disposable coffee cups every hour.
- Americano is a coffee drink that appeared during World War II. The US military wasn’t able to drink European coffee because of its strength and asked to dilute the drink with water.