Advantages and disadvantages of drinking coffee
Like tea in China, coffee is one of the most popular drinks in the world. What are the advantages and disadvantages of drinking coffee? Come and have a look with me!
The benefits of drinking coffee
Prevention of gallstones
Coffee is not only a refreshing drink, but also can prevent gallstones. Researchers at Harvard University found that people who drink two or three cups of coffee a day are about 40% less likely to develop gallstones than those who don't drink coffee. Those who drink more than 4 cups of coffee a day will have a reduced risk of gallstones to 45%.
However, decaffeinated coffee has no such effect. Caffeine can stimulate gallbladder contraction and reduce cholesterol which is easy to form gallstones in bile. However, beverages such as tea and cola, which also contain caffeine, cannot achieve this effect because the caffeine content is lower than that of coffee.
protect against radiation
At present, the radiation produced by radiation has become the enemy that harms people's health. Especially the radiation of household appliances, such as computers, televisions, microwave jealousy and so on. A recent study found that coffee can protect mice from radiation damage, which may also apply to humans.
Researchers at the Baba Atomic Research Center in India found that 70% of the experimental mice injected with caffeine were still alive after 25 days after receiving high-dose radiation, and all the experimental mice that were not injected died. Kachapili George, who led the study, said that this discovery may also apply to humans. Studies have shown that coffee may help prevent radiation damage. ?
Protect the cardiovascular system
The polyphenols contained in coffee not only have antioxidant effect, but also have cardiovascular protection function. Recently, at the symposium on food chemistry of the annual meeting of the American Chemical Society, there was new scientific evidence that coffee contains powerful antioxidants and has the function of protecting the heart and blood vessels. These polyphenols, also known as flavonoids, have super antioxidant capacity.
Prevention of gout
The increase of uric acid in blood is the main cause of gout, and increasing daily coffee intake can significantly reduce the level of uric acid in blood. People who love coffee, especially those who drink more than two cups of coffee every day, have significantly lower levels of uric acid in their blood, thus greatly reducing the incidence of gout.
Regulating emotion
After ten years of research, a professor at Bristol University in England found that people become more alert and more focused after drinking a cup of coffee. Coffee can stay in the body for three to five hours, so it has a long-term refreshing effect. So when your energy is not enough, drinking a cup of coffee can improve your alertness. Drinking a cup of coffee when you are tired has a refreshing effect and instantly refreshes you.
lose weight
If you want to satisfy the tip of your tongue and not gain weight, it is excellent to choose a cup of black coffee and milk for afternoon tea. A steaming cup of black coffee has only 2.55 kilocalories, which can also help you promote blood circulation, consume body heat faster, effectively decompose fat and prevent cardiovascular and cerebrovascular diseases. Black coffee also has diuretic effect.
Promoting blood circulation and removing blood stasis
Linoleic acid contained in coffee has the functions of hemolysis and tissue thrombosis, enhances vasoconstriction, promotes blood circulation, and can relieve headache caused by vasodilation, especially migraine.
get a facial
Because coffee has the function of promoting kidney function and diuresis, it can help the human body to excrete metabolic waste in time. Coffee also contains flavonoids, whose antioxidant effect far exceeds that of vitamin E, and it has beauty beauty and anti-aging effects.
The disadvantages of drinking coffee
Lead to osteoporosis
Caffeine is easily combined with free calcium in human body and excreted through urine. The reduction of free calcium will inevitably lead to the decomposition of bound calcium, which will lead to osteoporosis, so people who like to drink coffee should pay more attention to calcium supplementation.
Emotional deterioration, insomnia
Caffeine has an exciting effect, and drinking too much coffee at a time will worsen your mood. When the average person consumes more than 400 mg (4 cups) of caffeine every day, it will bring negative effects, make people fidgety, want to invade others and create trouble. And if you drink coffee before going to bed, you will lose sleep because you are too excited.
anorexia
Caffeine can refresh people because it can excite sympathetic nerves, and it also has the side effect of losing appetite. Drinking coffee on an empty stomach will stimulate the stomach and increase the secretion of gastric juice, which is not good for patients with gastric ulcer.
reduce sex drive
Drinking too much coffee before the same room will make the sympathetic nerve too excited, while the parasympathetic nerve will be inhibited. Excessive excitement of sympathetic nerves will make people unable to relax and immerse themselves in a pleasant atmosphere, and the good mood of sex will be replaced by anxiety. The clinical manifestations are decreased sexual desire and suppressed erection, which greatly reduces the quality of sexual life.
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