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Because of these shortcomings, why not drink more coffee?
In fact, coffee is not a drink suitable for regular drinking, but many people still drink coffee for a long time. In fact, drinking coffee all the time is harmful to their health. The following are the reasons why you can't drink more coffee because of these shortcomings.

Why can't you drink more coffee?

Coffee is the most consumed beverage in the world today. In some countries in Europe and America, more than 70% adults have the habit of drinking coffee. The annual coffee consumption in the United States can reach more than 6.5438 million tons, with an average of 3-4 cups per person per day. In the cities of our country, coffee has also become a daily drink. Modern medicine has proved that coffee has the functions of refreshing, promoting thinking, exciting nerves, eliminating fatigue, stimulating appetite and helping digestion. However, excessive drinking of coffee has caused many people to suffer from "coffee disease".

Coffee contains caffeine, which can excite nerves, stimulate blood vessels and accelerate the heartbeat. Excessive drinking of coffee can cause sinus tachycardia and premature ventricular contractions, hypertension and insomnia at night. For people with gastric ulcer or gastritis, because coffee can stimulate the gastric mucosa and increase the secretion of gastric juice, it will aggravate the lesion.

Drinking more coffee can induce heart disease. American medical experts have found through long-term research that if a person drinks five or more cups of coffee every day, the possibility of heart disease is twice as high as that of not drinking coffee, and people who drink coffee for a long time are more likely to have heart disease. Norwegian medical researchers studied 1458 1 ZO? 54-year-old adults made a survey to observe the relationship between their coffee consumption and serum total cholesterol. Drinking more than 9 cups of coffee a day can increase the serum cholesterol of men by 6.2-6.3 ng/L and that of women by 5.9-6. O nanograms per liter. Elevated serum cholesterol can induce coronary heart disease.

Medical research has also confirmed that drinking three cups of coffee in a short time can lead to emotional tension, anxiety and shortness of breath. Drinking more than 10 cup can cause some poisoning symptoms, such as tinnitus, delirium, blurred vision, tachyarrhythmia, muscle tension, tremor and so on. Drinking more than 100 cups will lead to death. Balzac, a French writer, died young because he was addicted to coffee. In addition, excessive drinking of coffee by pregnant women can also lead to teratogenesis and premature delivery.

Therefore, it is forbidden to drink too much coffee in a short time, and pregnant women, patients with heart disease and stomach disease can only drink it in moderation to prevent coffee from causing harm to the human body.

Can drinking coffee fight cancer?

Although the World Health Organization has changed its attitude towards coffee, it has not mentioned the benefits that coffee can bring to people. But other organizations point out that coffee can prevent some types of cancer. The American Institute for Cancer Research shows that coffee may protect drinkers from certain cancers.

Besides, coffee can not only prevent cancer. Researchers at the University of Southampton in the United Kingdom have found that coffee is also good for liver disease. The study involved 430,000 participants and nine research reports, and concluded that drinking two cups of coffee a day can reduce the risk of liver disease by 44%.

How to buy coffee

No matter what kind of coffee, freshness is an important factor affecting the quality. When buying, grab one or two coffee beans and chew them in your mouth. If it is crisp and intact, it means that the coffee beans are not wet, and the coffee beans with fragrant lips and teeth are top grade, but it is best to pinch them by hand to see if they feel solid. Never buy empty coffee.

Freshly fried coffee beans are not suitable for immediate drinking. Generally speaking, the best drinking period of coffee is one week after frying, when the coffee is freshest and has the best aroma and taste.

In addition, the taste of coffee beans is another consideration. Experts choose coffee beans, but not necessarily according to the size of the particles. Coffee beans may vary in size in appearance. For example, it is normal for beans in Ethiopia to have different characteristics. Secondly, the color, whether raw beans or cooked beans will have different colors, is a normal phenomenon, do not read my humble opinion in books or materials unilaterally, generalize all coffee beans. Relatively speaking, medium-deep roasted coffee beans are easier to produce oil than lightly roasted coffee beans, while lightly roasted coffee beans have no oil or little oil. In a word, when buying coffee, we should pay attention to its freshness, aroma and bad taste.

Correct drinking method of black coffee to lose weight

Coffee weight loss tips 1: smell

Make a cup of black coffee, smell the aroma of coffee first, and immerse yourself in the rich aroma of coffee.

Tip: Smelling the aroma of coffee can make people feel calm, improve the sensitivity of the five senses and stimulate the willingness to lose weight.

Coffee weight loss secret 2: products

Drinking coffee should be like drinking tea, paying attention to the "taste", tasting slowly, and drinking a cup of strong black coffee within 30 minutes to 1 hour after meals.

Tip: Caffeine helps digestion after meals and promotes fat burning.

Coffee weight loss secret three: move.

Have another cup of black coffee after work to prepare for the exercise after work.

Tips: It is better to walk home after work, usually in 15-30 minutes, or climb the stairs to go home, which is more conducive to losing weight.

Coffee weight loss secret 4: massage

Massage the parts that are easy to accumulate fat with the brewed coffee grounds, such as the lower abdomen, thighs and waist.

Tip: can decompose fat, bath massage is more effective, and make skin smooth and firm.