Coffee is one of the three major beverages in the world. Many people start their day by washing cups and picking up coffee. Sipping a sip of coffee is full of energy, this is also the consensus of everyone. However, some people think that drinking coffee is the same as taking a loan. The energy borrowed must always be paid back. Long-term refreshment of coffee will have an impact on the body. So, will drinking coffee for a long time be bad for your health?
What does coffee experience in our body?
Coffee drunk will be broken down into caffeine, fat, protein, polyphenols, and minerals. And the "story" that happened after we drank coffee was mainly related to caffeine. When caffeine enters the human body, it can break through the blood-brain barrier and enter the brain. The caffeine concentration in the blood reaches its peak in 15 minutes to two hours, and then it is metabolized and digested. However, the journey of caffeine in each person is different, which is related to personal metabolism and genetics. Smoking and oral contraceptives will slow down the metabolism of coffee.
A moderate amount of coffee is refreshing, but long-term lack of sleep, coffee is useless, your sleepiness will not be eliminated by drinking coffee, and caffeine cannot compensate for the decline in body function after long-term lack of sleep. If you take it too late, caffeine will affect the quality of sleep, and drinking coffee in large quantities or sensitive people will increase anxiety. Some people are naturally more sensitive to caffeine, and will experience rapid heartbeat, nausea, dizziness and other drunken symptoms after drinking.
If you drink too much coffee, you will have a tolerance reaction. Some people often complain that the more coffee you drink, the more it looks like boiled water. At this time, you can try to stop coffee and let your body "quit" caffeine, but you may experience headaches, fatigue, decreased brain sensitivity, depression, etc. These symptoms are most intense in the first couple of days. After about nine days, we can be full of energy without coffee.
Does caffeine intake affect your health?
Coffee is a boost for people who lose weight. Drinking coffee for a long time can reduce weight slightly, but the premise is black coffee without sugar or milk. Caffeine is a natural diuretic, and about 29% of people drink coffee to have a laxative effect.
Because caffeine has the effect of accelerating heart rate, enhancing myocardial contraction, and raising blood pressure, many people worry that long-term coffee consumption will increase the prevalence of cardiovascular diseases. In fact, as early as the 1970s and 1980s, there were many papers demonstrating that long-term large amounts of coffee would increase the risk of myocardial infarction and induce premature beats or arrhythmias. However, later researchers found that the previous research did not consider the impact of life factors. Because people who drink a lot of coffee for a long time are often those who are tired from work, sit in the office for a long time, have irregular work and rest, eat unhealthy diet, exercise less, and are addicted to alcohol and tobacco. After entering the 21st century, scientists have done relevant research again. After excluding the influence of age, gender and life factors, they found that caffeine has not proven to be related to the increased risk of high blood pressure and heart disease, and moderate coffee can also reduce cardiovascular disease. risks of. Caffeine is also added to some medicines, such as caffeine in painkillers. Caffeine can also slightly improve adult lung function and can effectively treat apnea in premature infants. For premature infants with respiratory failure, caffeine citrate injection is a commonly used medicine.
It is important to note that coffee can affect the developing fetus through the placenta. Pregnant women drinking coffee has been shown to be associated with a higher risk of miscarriage and may also cause the child to be overweight.
Drinking coffee on an empty stomach hurts the stomach?
"Drinking coffee on an empty stomach hurts the stomach" has a long history, because coffee can increase the secretion of gastric acid, relax the esophageal sphincter, aggravate acid reflux, and promote the peristalsis of the small intestine, so some people think that coffee will increase the probability of stomach problems.
However, in 2013, a study on whether coffee drinking is related to peptic ulcers found that the occurrence of gastric ulcer or duodenal ulcer has nothing to do with whether or not coffee is consumed, but is mainly related to the presence or absence of Helicobacter pylori Infection, smoking, etc. are related. In other words, in order to prevent the occurrence of gastrointestinal ulcers, it is only useful to kill Helicobacter pylori and quit smoking. It is useless to quit coffee.
But don't be too happy too early. Although healthy people drink coffee will not cause gastrointestinal ulcers, but for gastrointestinal diseases such as gastric ulcer, duodenal ulcer, inflammatory bowel disease, irritable bowel syndrome, gastrointestinal surgery recovery period, etc. For patients, there is indeed evidence that coffee may aggravate ulcers or delay ulcer healing.
Drinking coffee like this is healthy
Although coffee is fragrant, long-term drinking will still cause some negative effects on the body.
Drinking coffee for a long time will stain your teeth. Coffee, tea, red wine, and cola all contain a substance called tannin, which is dark brown. If it acts on the teeth for a long time, it will penetrate into the teeth and cause the teeth to turn yellow. Drinking coffee may cause the loss of calcium. There are three components in coffee beans that may be related to the loss of calcium: potassium, oxalic acid, and caffeine. In theory, these things will cause the loss of calcium in the body.
What should we do in the face of these situations? How to drink coffee healthily, you need to know the following knowledge points.
The upper limit of daily caffeine intake is 400 mg. The caffeine content of a large cup of American style is about 200 mg, and the caffeine content of a bag of instant coffee (15 g) is about 50 mg, so drinking one or two cups of coffee a day will not burden the body.
You can add milk when drinking coffee. Milk contains casein, which can reduce the penetration of tannins into the teeth, which also weakens the staining effect of coffee on the teeth. At the same time, adding milk to coffee can use the calcium in milk to make up for the loss of calcium caused by coffee.
People with gastrointestinal diseases, high blood pressure and caffeine-sensitive people should not drink coffee.
