1 Benefits of drinking coffee: Prevent gallstones

Coffee is not only a refreshing drink, but it can also prevent gallstones. Researchers from Harvard University in the United States found that those who drink two to three cups of coffee a day are about 40% less likely to develop gallstones than those who do not drink coffee. For people who drink more than 4 cups of coffee a day, the chance of getting gallstones will be reduced to 45%.

However, decaffeinated coffee does not have this effect. Caffeine can stimulate gallbladder contraction and reduce cholesterol in bile that can easily form gallstones. However, drinks such as tea and cola that also contain caffeine cannot achieve this effect because their caffeine content is lower than that of coffee. Radiation protection

At present, the radiation produced by radioactive rays has become a major enemy that harms people's health. Especially the radiation from household appliances, such as computers, TVs, microwaves, etc. Recent research has found that coffee protects mice from radiation damage, a finding that may apply to humans as well. Protect cardiovascular systems

The polyphenols contained in coffee not only have antioxidant effects, but also protect cardiovascular systems. In a recent symposium on food chemistry at the annual meeting of the American Chemical Society, There is new scientific evidence that coffee contains powerful antioxidants and has the function of protecting heart and blood vessels. These polyphenols, also known as flavonoids, have strong antioxidant capabilities. Preventing Gout

Elevated uric acid in the blood is the main cause of gout. Increasing daily coffee intake can significantly reduce the level of uric acid in the blood. People who love coffee, especially those who drink more than two cups of coffee a day on average, have significantly reduced uric acid levels in their blood, thus greatly reducing the probability of gout. Regulate emotions

People will become more alert and able to concentrate after drinking a cup of coffee. Coffee stays in the body for three to five hours, giving it a long-lasting energizing effect. So when you don't have enough energy, drinking a cup of coffee can increase your alertness. Drinking a cup of coffee when you feel mentally tired can refresh your mind and instantly cheer you up. Weight loss

If you want to satisfy your tongue but don’t want to gain weight, it’s best to have a cup of black coffee with milk for afternoon tea. A cup of steaming black coffee has only 2.55 kilocalories. It can also help you promote blood circulation, consume calories in the body faster, effectively break down fat, and prevent cardiovascular and cerebrovascular diseases. Black coffee also has diuretic properties. Promotes blood circulation and removes blood stasis

Linoleic acid contained in coffee has the effects of hemolysis and tissue thrombosis, enhancing vasoconstriction, promoting blood circulation, and can relieve headaches caused by vasodilation, especially migraines. Beauty

Because coffee can promote kidney function and diuresis, coffee can help the body excrete metabolic waste in time. Coffee also contains flavonoids, whose antioxidant effect far exceeds that of vitamin E. It has beautifying and delaying effects. The effects of aging.

2 Disadvantages of drinking coffee: Causes osteoporosis

Caffeine is easy to combine with free calcium in the human body and is excreted in the urine. The reduction of free calcium will inevitably cause the decomposition of bound calcium, leading to osteoporosis, so people who like to drink coffee should pay more attention to calcium supplements. Worsening mood and insomnia

Caffeine has a stimulant effect, and drinking too much coffee at one time will worsen your mood. When the average person absorbs more than 400 mg (4 cups) of caffeine per day, it will have negative effects, making people irritable, want to invade others, and cause trouble. And if you drink coffee before going to bed, you will suffer from insomnia because your spirit is too excited. Loss of Appetite

Caffeine can refresh the mind because caffeine can excite the sympathetic nerve. At the same time, it also brings a side effect of loss of appetite. Drinking coffee on an empty stomach will irritate the stomach and increase gastric juice secretion, which is not good for patients with gastric ulcers. Reduce sexual desire

Men who drink too much coffee before having sex will cause their sympathetic nerves to be overly excited and their parasympathetic nerves to be inhibited. Overexcitation of the sympathetic nerve will make it impossible for people to relax and immerse themselves in a pleasant atmosphere, and the beautiful emotions 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.