The effect of Coffee on people what is the effect of drinking Coffee on Health

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The composition of coffee

Coffee contains a variety of bioactive compounds, including methylxanthine, such as caffeine, theophylline and theobromine, as well as flavonoids and phenols. One of the most frequently mentioned is "caffeine", but other ingredients in coffee have also been published because more and more people drink coffee. Among caffeinated drinks, coffee has the highest caffeine content, about 100 to 150 milligrams per 150 cis. In contrast, the caffeine content of tea is relatively low, 30 to 70 milligrams per 150 cis. Caffeinated drinks have 30 to 60 milligrams of caffeine per 360 cis.

Effect of caffeine on human body

Caffeine excites the sympathetic nerves, so it can excite the mood, think clearly and quickly, eliminate tiredness and drowsiness, and speed up blood circulation, so the body begins to feel warm. However, this "pick-me-up" effect will not be maintained because of the "refill", and the attention and learning ability will still decrease with physical exertion. At the same time, when the sympathetic nerve is stimulated and sometimes excited, it suppresses appetite, so drinking coffee before a meal will make people less willing to eat; but because the stomach is stimulated, it will increase gastric juice secretion, which is disadvantageous to patients with gastric ulcers. However, if you drink after a meal, it will be helpful to digestion because the secretion of gastric juice will increase.

Many people use coffee to relieve headaches because caffeine in the human body inhibits the effect of phospholytic enzymes, relaxes vascular smooth muscle, dilates blood vessels, and stimulates sensitive cells to release histamine, which is used in the central nervous system. so it makes people feel happy, and at the same time relaxes the cerebral vessels that cause headaches, thereby relieving headaches. But if you drink too much coffee in a short period of time, it will be counterproductive and cause severe headaches.

After drinking coffee, the concentration of caffeine in the blood reaches its peak after 45 to 50 minutes. In general, its effect can last for three to four hours. Caffeine is metabolized by the kidneys, but the rate at which caffeine is removed varies from person to person, and may last up to eight to 12 hours.

The body's ability to metabolize caffeine is affected by age. Children under the age of 12 are not suitable to drink caffeinated drinks because of their poor metabolism of caffeine, so as not to affect sleep and learning. Most adults have a better tolerance for caffeine, but as they get older, coffee, which would not affect sleep, may also keep people awake because of a decline in metabolic power.

Although caffeine is a purine-like alkaloid, its metabolite is not uric acid, so people with gout can still drink caffeinated drinks in moderation.

The benefits of coffee

The most common use of coffee is refreshing, but it is also a drawback: it may keep people awake, which is why caffeine is added to some cold medicines to offset the drowsiness caused by the drugs.

Many people think that caffeine can stimulate metabolic rate, affect appetite and diuresis, so they want to help drink coffee to control weight. However, when the body accelerates calorie consumption, blood sugar decreases, resulting in hunger. If you do not have strong self-control, you may eat more food, or if you eat high-calorie snacks with coffee, you want to lose weight. I'm afraid it's the fate of asking for fish! And rely on diuresis to control weight is only an illusion, as long as drink water, the weight will come back.

Among the benefits of drinking coffee, "improving constipation" is an interesting topic. According to the study, 180cc coffee can effectively improve constipation with or without caffeine. It is effective only in the morning or after getting up, but the effect is not obvious at other times. If this is the case, I think drinking water should also have this effect. After getting up in the morning, drinking a glass of cold water will cause stomach-large intestinal reflex and make the sleeping large intestine begin to move, so it will be convenient.

In addition, it has been suggested that drinking one to three cups of coffee a day may promote thinking, improve memory, reduce the risk of Parkinson's disease, and reduce the suicide rate of people with depression. However, it is not that the more you drink, the better the effect. Overdose not only has no effect, but may also have other side effects.