First of all, the benefits of drinking coffee
1, refresh
You should know that drinking coffee can refresh you, so many people choose to drink a cup of coffee to refresh themselves when they are sleepy.
Why do you say that drinking coffee has a refreshing effect? This is mainly because the caffeine contained in coffee has a powerful refreshing effect. But it is best not to drink coffee after five o'clock in the afternoon, because it will be counterproductive and easy to lose sleep.
Step 2 be smart
Drinking coffee can not only refresh us, but also make us smarter. This is mainly because of caffeine, because many studies show that caffeine can not only excite the brain, but also improve mood and improve our memory. It can keep the brain in good working condition and make us smarter and smarter.
Step 3 lose weight
Caffeine contained in the opening can also stimulate the central system, thus improving our body's metabolism, allowing the fat stored in the body to be digested quickly, thus achieving the effect of losing weight.
Step 4 protect the liver
In today's society, many people damage our liver because of excessive drinking, and there are many opportunities to cause cirrhosis. Studies abroad show that people who drink coffee regularly are about 80% less likely to suffer from cirrhosis than those who don't drink coffee. Therefore, drinking coffee can also protect the liver.
Second, the disadvantages of drinking coffee often
1, female infertility
Women who drink 1 cup of coffee every day are more likely to suffer from infertility than women who don't drink coffee. Experts investigated 104 women who have the habit of drinking coffee, and about 50 of them are not easy to get pregnant. Some fertility experts believe that this is a small-scale study and cannot finally confirm the special role of coffee in fertility. However, the researchers stressed that if the cause of infertility cannot be explained medically, it should be considered that infertility is related to caffeine.
2, myocardial infarction
Physicians from Boston University School of Public Health studied 858 women aged 45-69 who suffered from myocardial infarction for the first time and 858 women who had never suffered from myocardial infarction for four years. The results show that drinking five or more cups of coffee a day will increase the risk of myocardial infarction in women by 70%, and the risk will increase with the increase of coffee consumption.
3. osteoporosis
Researchers at the University of California surveyed 980 elderly women aged 50-98. The results show that the bone mineral density of hip and spine will decrease in elderly women who drink more than 2 cups of coffee every day for a long time, regardless of their age and obesity, and the degree of decline is related to the habit duration and drinking amount. Because caffeine can combine with free calcium in the human body and be excreted through urine. The decrease of free calcium will inevitably lead to the decomposition of bound calcium, which will lead to osteoporosis.
4, deformed fetus
In the early 1980s, Dr. Colin of the US Food and Drug Administration found in experiments that pregnant mice would give birth to deformed mice after feeding them the amount of 12 ~ 24 cups of espresso that adults drink every day. To this end, the researchers warned pregnant women in the name of the US Food and Drug Administration that they should stop drinking coffee.
5, pregnancy-induced hypertension
Pregnancy-induced hypertension syndrome (PIH) is a unique disease of pregnant women. The patient is characterized by edema, hypertension and proteinuria. If not prevented in time, it may endanger the safety of mother and fetus. According to an Australian study, drinking only a few cups of coffee a day will raise blood pressure. Therefore, pregnant women should not drink coffee.
Step 6 suffer from diabetes
Through investigation and analysis, researchers in Finland and the United States found that coffee consumption in these two countries is the largest, so the number of people suffering from diabetes in these two countries is also the largest. Among them, Finland's coffee consumption ranks first in the world, and the country has the largest number of diabetic patients in the world. Other Nordic countries also drink a lot of coffee and suffer from diabetes. On the contrary, Japanese people drink the least coffee in the world and have the least number of people with diabetes.