However, some people think that drinking coffee is not good, because when drinking coffee, the heart beats faster and the palms sweat, which will also affect the quality of sleep.
Some people think: "Coffee tastes sour and astringent. If it is just refreshing, it is a bit difficult for so many people to drink. "
"There was a time when I drank too much coffee. When I was inactive, my heart beat was above 120, and I was sweating all the time. The whole person is very excited. Since then, I rarely drink coffee, and even if I drink it, it will not exceed 3 pm. "
Have a drink when you are sleepy, and have a drink if you want. What effect will drinking coffee for a long time bring to the body? Drinking coffee can make people excited, so is it good or bad for vascular health?
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Why is drinking coffee exciting?
Before answering this question, let's understand how fatigue comes about. Because of daily physical activity, our physical strength and energy will be gradually consumed. At this time, adenosine will be metabolized in the body and combined with adenosine receptor. To a certain extent, it will "send a signal" to the brain, reminding the brain that the body is very tired now and needs to rest.
Coffee can refresh the mind because the chemical structure of caffeine is very similar to adenosine. After coffee enters our body, it will "disguise" as adenosine and adenosine receptor, so it will not send a fatigue signal to the brain.
The real adenosine in our body will continue to work, leaving our body with too many "fatigue debts".
The half-life of coffee metabolism is generally about 2.5~4 hours. Once the metabolism is completed, the real adenosine will work again, sending a signal of fatigue to the brain.
Therefore, it is ok to drink coffee properly at ordinary times, but don't rely on coffee to relieve fatigue. Coffee can really refresh the mind, but it is just a kind of "deception", which can prevent fatigue from being transmitted to the brain in a short time, but it can't really eliminate fatigue.
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Drinking coffee can refresh you, is it good or bad for vascular health? Make it clear in an article
In order to study the relationship between blood vessels and coffee, researchers at the University of S? o Paulo in Brazil conducted an experimental study and found that drinking three cups of coffee a day helps to reduce the risk of atherosclerosis, which also helps to reduce the risk of stroke and heart disease.
In this study, people with an average age of 50 years old were selected as the research object, and more than 4,400 people were divided into three groups according to the daily coffee consumption: less than one cup, 1 ~ 3 cups of coffee and more than three cups of coffee, and then the coronary artery calcification and deposition of these three groups were analyzed.
The experimental results show that the degree of coronary artery calcification is negatively correlated with coffee consumption, which means that people who drink three cups of coffee a day have lower risk of coronary artery calcification than the other two groups. Currently, this study is published in the Journal of the American Heart Association.
In addition, the American Heart Disease and Lifestyle Working Group also pointed out that coffee contains caffeine, rich bioactive polyphenols and potassium and other minerals. In a survey in 16 years, it was found that compared with people who don't drink coffee, participants who drink more than 4 cups of coffee a day have a lower risk of premature death 18%.
This shows that drinking coffee properly at ordinary times has the effect of protecting blood vessels.
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Coffee is good, but it is not suitable for these three people.
Osteoporosis patients
People who drink coffee regularly lose calcium quickly, and caffeine in coffee will also affect the absorption of calcium in food by the intestines, so that most of the calcium in the body will be discharged at once.
For those patients with osteoporosis, it is best not to drink coffee every day, because coffee will affect the absorption of calcium in the body and make osteoporosis more serious.
Patients with gastric ulcer
Patients with gastric ulcer mainly have too much stomach acid, which has caused great harm to gastric mucosa.
Caffeine intake will undoubtedly increase the stimulation of gastric mucosa; Therefore, patients with gastric ulcer should be strictly avoided.
Patients with heart disease
Excessive drinking of coffee will lead to a rapid heartbeat, and caffeine will excite the central nervous system, make the heart rate faster, aggravate the symptoms of patients with coronary heart disease, and even cause unstable angina pectoris.
Coffee contains a lot of caffeine, which will stimulate patients' nerves and make patients' heart rate accelerate, leading to arrhythmia and high blood pressure.
Drinking too much coffee will make patients flustered, flustered and tachycardia.
Conclusion: It can be seen that drinking coffee is not harmful to health, but beneficial to cardiovascular system. However, we must control the amount of coffee we drink. Excessive coffee intake can easily lead to insomnia, dreaminess, gastrointestinal discomfort, rapid heartbeat, irritability and headache.