Without a cup of fragrant coffee, many people simply do not represent their breakfast.
This drink quickly awakens, gives vigor and strength, and its thick noble smell perfectly raises the mood.
Coffee lovers do not neglect a couple of cups of invigorating drink and throughout the day;some do not deny themselves this pleasure in the late evening.
More recently, irrepressible drinking of coffee was considered very dangerous. Now the situation has changed. Recent research has shown that most of the negative effects are not related to the harmfulness of coffee, but to the individual intolerance of individual components of the drink.
- Nutritional value and composition of
- Than useful?
- Is there any harm?
- Contraindications to use
Nutritional value and composition of
100 g of ground coffee powder contains 200.6 kcal. Since 5-6 g of powder is used to make a portion of the beverage, the calorie content of one cup will be extremely low and amount to only 10-12 kcal. When adding sugar or milk to the drink, the calorie content of the cup of coffee will increase.
The coffee beans contain about 2000 components, among which:
- water - 3%;
- caffeine - 0,6-2,7%;
- fats - 12%;
- proteins - 13%;
- carbohydrates - 4%;
- sucrose and fructose - 25%;
- chlorogenic acid - 7%;
- essential oils;
- tannin;
- micro- and macro elements: potassium, calcium, magnesium, phosphorus, sodium, iron;
- organic acids - 8%;
- vitamins P, B2, thiamine.
The composition of the grains varies depending on the variety, the degree of roasting and the duration of the thermal impact on the product. Especially strong roasting affects the caffeine content: its concentration increases by 1.3%.
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Than useful?
Everyone notices that after a cup of coffee, working capacity increases sharply, concentration of attention and reaction speed increases, physical endurance increases and mood improves. What other useful properties does coffee have?
This drink has an effect on all systems of human organs:
- Central nervous system .Caffeine dilates blood vessels, accelerates blood circulation and stimulates brain function. It is thanks to such properties of the drink that a person raises working capacity and mindfulness, memory improves. Doctors say that consuming 4 cups of coffee reduces the risk of such terrible ailments as Alzheimer's and Parkinson's diseases by 50% every day.
- Musculoskeletal system .Despite the fact that caffeine promotes the washing away of calcium from the body and the destruction of bone tissue, coffee consumption reduces the risk of gout by 40%.In addition, this drink reduces muscle pain after intense sports training. To avoid debilitating muscle pain, which invariably accompanies beginner athletes the morning after sports, it is recommended to drink 2 servings of coffee before going to the gym.
- Mental health .Coffee promotes the production of serotonin - a hormone of joy, so a fragrant drink can be considered an excellent remedy for depression. No less effective he struggles with apathy, lethargy, drowsiness. You can drink it to fight stress.
- Cardiovascular system .Caffeine stimulates the heart, increases heart rate, dilates blood vessels and increases blood pressure. That's why with a sharp drop in pressure, the patient is recommended to drink a cup of strong coffee.
- Respiratory system .Caffeine relaxes the airways, thereby reducing the intensity of cough and reducing the incidence of asthmatic attacks by 25%.
- Oral cavity of .Thanks to the content of acids and essential oils, coffee has a slight antibacterial effect: it prevents the development of caries and other bacterial diseases of the oral cavity. But the color of tooth enamel dark drink will affect the most negative way: with regular use of coffee teeth turn yellow and become covered with a brown coating.
- Digestive system .Coffee effectively cleanses the body of toxins, removes harmful substances, activates metabolic processes. That's why eating this drink helps to lose weight. To sports training gave the maximum result, an hour before going to the gym you need to drink a cup of an invigorating drink.
Coffee has a beneficial effect on all the digestive system:
- has a laxative effect, activates the intestines in people with difficult digestion;
- helps maintain the health of the gallbladder and kidneys, preventing the development of cholelithiasis( chemical substances contained in coffee, do not give the bile thicken and crystallize);
- several times reduces the risk of type 2 diabetes, since caffeine and chlorogenic acid prevent the accumulation of amyloid protein in the pancreas;
- reduces the rate of development of alcoholic cirrhosis;
- promotes the release of gastric juice, increases its acidity( coffee is an excellent drink for people suffering from gastritis with low acidity).
Is there any harm?
The harmful properties of coffee are manifested in the following cases:
- excessive consumption( more than 6 cups per day);
- individual intolerance of individual components of coffee beans;
- love of drinks based on espresso( coffee with milk, cappuccino).
The latter circumstance does not always bring harm. For example, the use of coffee with milk prevents the elution of calcium from the body and stops the destruction of bone tissue. However, the calorie content of such a drink is extremely high. If the espresso cup contains only 10 kcal, then a serving of coffee with milk and sugar contains about 60 kcal.
Consequences of coffee-based beverage abuse:
- Increased cholesterol and increased risk of cardiovascular disease .During the preparation of the drink, harmful chemical elements are released from the coffee powder - coffee beans, kofestrol and benzapyrene. They increase the level of cholesterol, cause tachycardia, contribute to high blood pressure and rapid wear of the heart muscle. The amount of harmful substances depends on the roasting: the coffee of strong roasting contains more harmful compounds.
- Nervousness and irritability, depression and inhibition, anxiety and insomnia .The fact is that a single use of coffee stimulates the work of the nervous system. If the nervous system regularly remains in an excited state, there is a great deal of stress. Its consequence is the depletion of nerve cells and the appearance of neuroses, psychoses, paranoid states. If a person suffers from mental illness, ingestion of caffeine will trigger unmotivated aggression.
- The occurrence of dependency. People who drink coffee for a long time notice that with a brief refusal of a drink, they have a headache, irritability, drowsiness, or nausea. Without a cup of a favorite drink a person can not wake up any more, goes angry and angry the whole day. The symptoms resemble the "breaking" of drug addicts.
- Poor assimilation of important vitamins, micro- and macro elements .Coffee reduces the absorption of B vitamins, calcium, potassium, sodium and magnesium. Moreover, coffee cleanses calcium from the body and makes the bones brittle and brittle.
- Skin disease .Doctors say that the daily use of coffee contributes to the rapid withering of the skin of the face and provokes the occurrence of skin diseases( for example, couperose).This is due to the fact that coffee dehydrates the tissue, deprives them of softness and elasticity.
- Gastritis .The ability of coffee to stimulate the production of gastric juice and increase its acidity sometimes turns into serious trouble: drinking coffee on an empty stomach can trigger an attack of gastritis or the development of an ulcer.
- Dehydration of the body .Diuretic and laxative properties of coffee often bring an unexpected result: the body can lose too much water. Paradoxically, the more coffee a person drinks, the more water they should consume daily. Avoiding dehydration is simple - enough besides coffee to include in your diet and other drinks.
- Complications during pregnancy .Consumption of more than 4 cups of coffee per day during pregnancy can lead to complications, as well as to health problems of the child born( it will grow slowly and hardly gain weight).
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Contraindications to use
Who should not drink coffee? It all depends on the individual characteristics, but to limit the use of an invigorating drink follows people with certain diseases.
Contraindications:
- ischemic heart disease;
- mental illness;
- hypertension;
- atherosclerosis;
- kidney disease;
- glaucoma;
- stomach ulcer;
- insomnia.
It is not advisable to drink coffee for children under 10 years old, as well as for older people. Caffeine provokes enuresis, nervous tics, mood swings. The child becomes more aggressive, capricious, anxious.
Can I drink coffee during pregnancy? There is no unambiguous answer to this question. Everything depends on the individual characteristics of the woman's body. Someone a couple of cups of a fragrant drink a day will not do harm, while others can provoke a miscarriage or death of an infant in the womb.
Coffee is not only delicious, but also a healthy drink. However, excessive use of it can lead to sad consequences. Like other useful products, coffee should be consumed in small doses. The daily norm of an invigorating drink is 4 cups.
In addition, it must be remembered that only natural product has useful properties: soluble and freeze-dried surrogates will have a negative impact on health.