How many cups of coffee can I drink every day? Is drinking coffee a healthy life?

In fact, no matter how many drinks, experts have found its advantages and disadvantages, mainly depends on personal needs. Swedish scientists have found that women drinking five to six cups of coffee a day can help reduce the incidence of invasive breast cancer. This is undoubtedly good news for female coffee lovers. Recently, a study on the health effects of drinking coffee was published on the website of the Daily Mail. Let's find out how much coffee is healthiest every day. A cup of coffee can lower blood pressure and keep you awake: Greek studies have found that drinking a cup of coffee a day can help lower blood pressure. Volunteers who drank one or two cups of coffee a day had the healthiest cardiovascular system. Scientists believe this is because the antioxidants in coffee help increase the production of nitrogen oxides, which relax the walls of blood vessels, thereby lowering blood pressure. In addition, a British study found that people who drank a cup of regular coffee a day were smarter than those who drank decaf or did not drink coffee. The downside: members of the British Dietary Association say that even if you drink only one cup of coffee a day, you may suffer from insomnia. Because it takes about eight hours for the body to fully metabolize caffeine, it's best not to drink coffee after three or four o'clock in the afternoon, or you'll have to count sheep at night. Two cups of coffee can prevent dementia and lead to miscarriage: drinking two cups of coffee a day can help reduce the risk of Alzheimer's, according to scientists at the University of Florida. The International Journal of Sports Medicine suggests that drinking two cups of coffee 30 minutes before exercise can improve exercise ability. Because coffee stimulates the production of fatty acids, the body can use these fatty acids as fuel to provide energy for the exercising body. The downside: if you are pregnant, your daily caffeine intake should be limited to less than 200 milligrams, or less than two cups of coffee. Because coffee can increase the risk of miscarriage by raising levels of the stress hormones cortisol and epinephrine in the body. Three cups of coffee can ward off stones and shrink your chest: according to a 2008 report in the American Medical Journal Cancer, women who drank three cups of coffee a day reduced their risk of ovarian cancer by one to five. for those who took contraceptive and hormone replacement therapy, they benefited more, reducing their risk of ovarian cancer by 35 to 43 percent. Men drinking three cups of coffee a day can help reduce the risk of gallstones by 40 percent, according to a study in the journal. Scientists believe that caffeine can stimulate the contraction of the gallbladder, helping to expel some tiny rubble and prevent them from forming larger, hard-to-remove stones. The downside: in 2006, a US study found that people who drank three cups of coffee a day had an increased risk of heart disease. The scientists explained that after three cups of coffee, the heart beats faster, which can cause a significant increase in blood pressure. In addition, a study from Lund University in Stockholm, Sweden, found that drinking three cups of coffee a day may shrink women's breasts. This may be related to the effect of caffeine on estrogen levels. Four cups of coffee can protect the mouth and also cause arthritis benefits: four cups of coffee contains about 400 milligrams of caffeine, which is the most effective amount of coffee to play an antioxidant role. Both tea and coffee are rich in antioxidants, polyphenols, which can effectively reduce the risk of cancer. Scientists at the University of Utah found that people who drank four cups of coffee a day had a 39% lower risk of developing oral and throat cancer. The downside: people who drank four cups of coffee doubled their risk of developing rheumatoid arthritis. The researchers believe that coffee increases levels of certain chemicals in the body that can cause inflammation and joint pain. Five cups of coffee can protect the liver and lead to the benefits of calcium deficiency: researchers at the National Cancer Center in Tokyo found that drinking five cups of coffee a day reduced people's risk of severe liver damage by 3/4, which may be related to antioxidants in coffee. The downside: several studies have found that coffee is an important factor in osteoporosis because it interferes with calcium absorption. However, many experts are controversial. The National Osteoporosis Association says there is no absolute evidence that coffee causes bone loss, but advises people to drink no more than five cups of coffee a day. Health experts advise coffee drinkers and socializers not to drink too much coffee, preferably two to three cups a day, and in principle, no more than three cups a day for any irritating drink. 1. Canadian researchers recently found that caffeine has a bad effect on people who don't have enough insulin. Researchers have found that caffeine has adverse effects on potential patients with type 2 diabetes, which may lead to type 2 diabetes. Type 2 diabetes is the most common diabetes in Canada, accounting for 90% of all diabetics. two。 American scientists have found that smokers who drink three or more cups of coffee a day can quadruple their risk of developing pancreatic cancer. Caffeine has an adverse effect on normal cells. it can promote cell aging and has a non-negligible effect on the formation of pancreatic cancer. Coffee drinkers are 2-3 times more likely to develop pancreatic cancer than non-coffee drinkers. At present, about 20,000 people die of pancreatic cancer in the United States each year, at least half of which are caused by drinking coffee. 3. Researchers from Harvard University in the United States have found that people who drink coffee are more likely to develop bladder cancer, especially for women. If the risk of bladder cancer is set at 1 for those who drink only half a cup of coffee or not, then among those who drink more than three cups of coffee a day, the risk of bladder cancer is 1.31 for men and 2.19 for women. Japanese scientific research report also said that in some male patients with gastric cancer, many people like to drink coffee. 4. According to the results of earlier international studies, pregnant women who drink coffee or other caffeinated drinks are prone to miscarriage, and even if they do not have a miscarriage, their fetuses are likely to weigh less. However, the result is also controversial. Recent findings by Swedish researchers suggest that a small amount of coffee or other caffeinated drinks consumed by pregnant women may not do any harm to the fetus. However, most researchers admit that pregnant women should not drink too much coffee. 5. Coffee contains caffeine ingredients, with mild central nervous stimulation, appropriate drinking can reduce fatigue, enhance memory, reasoning and intelligence, auditory and visual response also become sharp. At the same time, long-term absorption of excessive caffeine may lead to high blood pressure. Recently, the international medical community has also discussed the possible effects of coffee on health problems such as osteoporosis, high blood pressure, heart disease, weight loss, pregnancy and preterm birth.