Caffeine: daily value, effect on the body. Caffeine content in tea and coffee

2024 Author: Isabella Gilson | [email protected]. Last modified: 2023-12-17 03:14

Everyone knows that caffeine is the main ingredient in an invigorating morning drink. In fact, it is used not only in coffee, but also in weight loss, in the fight against cellulite and in medicine. People do not always guess how much of this substance enters the body. Let's see what caffeine is useful and harmful for, how much of it is acceptable for consumption, as well as the daily amount of caffeine for a person.

Caffeine

Most think of caffeine as brown flecks, similar to instant coffee. In fact, these are colorless or whitish crystals with a bitter taste. Caffeine is a purine alkaloid or a complex chemical compound of organic origin containing nitrogen in its composition. This substance is extracted from coffee and tea plants, and caffeine in its pure form is obtained from waste.

Where is the caffeine found

Caffeineis the most widely used substance in the world. It is especially popular as a stimulant drink - coffee, tea and a variety of energy drinks. Caffeine is present not only in coffee, but also in tablets of the same name, many foods, drinks and medicines.

So here is the caffeine content of:

• Fresh coffee (95-125mg per cup).
• Instant coffee (60-70mg per cup).
• Black tea (30-70mg per mug).
• Green tea (25-50mg per mug).
• Pepsi and Coca-Cola (30-45mg per 100g).
• Cocoa (10-18mg per cup).
• Bitter (60mg per 100g) and some types of milk chocolate (20mg per 100g).
• Energy drinks (30-80 mg per 250 ml).
• Found in kola nuts and guarana fruit.
• Found in some medicines.

Note that the amount of caffeine depends on the type and method of preparation of coffee and tea.

Daily Value

According to nutritionists, the daily intake of caffeine should not exceed 200-300 mg. If daily use exceeds the allowable amount of this substance, then dependence will soon arise. If you refuse coffee drinks, you will have a headache and severe irritability. These symptoms will disappear in 3-4 days. Complete elimination of the alkaloid from the body will occur after a week.

Consumption of caffeine above the prescribed amount will lead to the development of depression. Finding out how much caffeine is in instant coffee isn't as easy as it sounds. Unfortunately, not allmanufacturers indicate information about the content of the substance on the package. Because of this, the calculation of the norm will have to be carried out independently. It is important to realize that this is individual. The legal limit will be affected by the gender, genetics and he alth of the individual.

Positive Impact

Yes, caffeine is a drug, but it has he alth benefits. Its effect is to enhance and regulate the processes of excitation of the cerebral cortex. If you do not exceed the daily rate of caffeine, then this substance will increase energy and enhance reflexes. In addition, the positive effect of increasing efficiency and mental activity has been proven. Caffeine is great for drowsiness and fatigue. It has been successfully used to raise low pressure.

Reasonable doses of caffeine are good for the digestive tract and for weight loss. Alkaloid suppresses hunger and promotes the burning of calories at rest. When released into the blood, the substance becomes fatty acids. With the help of them, the body melts subcutaneous fat. In addition to increasing physical activity, psychological endurance is enhanced, which is useful during training.

Harm

Excessive consumption of products containing this substance can lead to the harmful effects of caffeine, namely to drowsiness and exhaustion of nerve cells. Please note that alkaloids weaken the effect of a narcotic or sleeping pill, but at the same time work to increase the reflex excitability of the spinal cord.

Caffeineincreases cardiac activity and causes the myocardium to contract faster. This is a serious caution against the use of caffeinated products by people with cardiovascular diseases, in particular hypertension.

It is not recommended to use caffeine in any form for those who have glaucoma, insomnia, and during pregnancy. It is also important to be aware of the caffeine content of tea and coffee, the most popular drinks in the world.

Caffeine addiction

The action of caffeine is similar to the principle of cocaine, heroin and amphetamines - the central nervous system is stimulated and additional energy is produced. Although the alkaloid is milder than narcotic substances, it can also provoke the development of dependence. People who can't start their day without a cup of hot drink and drink it multiple times throughout the day are more likely to be addicted. With a high probability, we can say that they do not monitor the caffeine content in tea and coffee. The term caffeineism has even been coined to explain caffeine abuse.

If a person is addicted to caffeine, reducing the use of this substance will lead to a sharp decrease in pressure. In turn, this will cause insufficient blood flow to the head. All this will lead to weakness and headache. These signs indicate an existing addiction.

The effects of caffeine withdrawal usually appear after half a day or a day. In addition to headache and weakness, the manifestation of a lackmay be accompanied by nausea, fatigue, drowsiness, irritability and anxiety. The most severe cases are accompanied by depression, decreased motivation and concentration levels. To avoid the possibility of addiction, you need to know where the caffeine is found.

Like many narcotic substances, the alkaloid is characterized by an addictive effect. A person who consumes caffeine becomes less sensitive to the substance over time. As a result, he begins to take it in larger quantities than before in order to experience the desired effect.

There is an assumption that caffeine addiction is very large-scale, and if in one day all caffeine disappears, then the productivity of the whole world will drop to 30%. An alkaloid cannot be confidently attributed to a useful or harmful product, since this line depends only on the amount of the substance used. If you want to get only positive effects, then remember this rule - use it irregularly and take into account the daily intake of caffeine.