An Analysis of the advantages and disadvantages of drinking Coffee

Swedish scientists have found that women who drink five to six cups of coffee a day can help reduce the risk of invasive breast cancer. This is definitely good news for female coffee lovers. Recently, the British "Daily Mail" website also published a study on the health effects of drinking coffee. Do you want coffee or not? How much should I drink every day? After reading it, you will understand.

a cup of coffee

Pro: Drinking a cup of coffee a day helps lower blood pressure, according to a Greek study. A study of 485 volunteers aged 65 to 100 found that those who drank one or two cups of coffee a day had the healthiest cardiovascular conditions.

Scientists believe this is because the antioxidants in coffee help increase the production of nitrogen oxides in the body, which relax blood vessel walls and lower blood pressure.

In addition, a University of Bristol study on the effects of coffee on intelligence found that people who drank a regular cup of coffee a day were smarter than those who drank decaf coffee or no coffee. This may be because caffeine boosts sugar transport to the brain, providing it with more energy and thus a temporary boost in intelligence.

Cons: Sina Porter, a member of the British Dietetic Association, says drinking just one cup of coffee a day may drive you to sheep counting at night. Because it takes about eight hours for your body to metabolize caffeine, it's best not to drink coffee after 3 or 4 p.m. or you'll suffer from insomnia.

two cups of coffee

Lee: Drinking two cups of coffee a day may help reduce the risk of Alzheimer's disease, say scientists at the University of Florida. And drinking two cups of coffee 30 minutes before exercise improves performance, suggests the International Journal of Sports Medicine. Because coffee stimulates the production of fatty acids, the body uses these fatty acids as fuel to fuel its exercise.

Cons: If you're pregnant, limit your caffeine intake to 200mg, or two cups, per day. Coffee raises levels of the stress hormones cortisol and adrenaline, which increase the risk of miscarriage.

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three cups of coffee

Benefits: According to a 2008 report in the American Medical Journal Cancer, drinking three cups of coffee a day reduces a woman's risk of ovarian cancer by one-fifth, and women who take contraceptives and hormone replacement therapy benefit more, reducing their risk of ovarian cancer by 35 to 43 percent.

A study in the Journal of the American Medical Association says men who drink three cups of coffee a day can reduce their risk of gallstones by 40 percent. Scientists believe caffeine stimulates the gallbladder to contract, helping to expel tiny fragments that form larger, hard-to-remove stones.

Cons: A 2006 U.S. study found that people who drank three cups of coffee a day had an increased risk of heart disease. Scientists explained that after three cups of coffee, the heart beats faster, which causes a significant rise in blood pressure.

Another 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

Pro: Four cups of coffee contain about 400mg of caffeine, which is the most effective amount of coffee to exert antioxidant effects. Both tea and coffee are rich in antioxidants called polyphenols, which can help reduce cancer risk. Scientists at the University of Utah found that people who drank four cups of coffee a day had a 39 percent lower risk of oral and throat cancer.

Cons: People who drank four cups of coffee doubled their risk of developing rheumatoid arthritis. Researchers believe coffee raises levels of certain chemicals in the body that cause inflammation and joint pain.

five cups of coffee

Pro: 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 three-quarters, possibly due to antioxidants in coffee.

Cons: Several studies have found that caffeine is an important factor in osteoporosis because it interferes with calcium absorption. However, experts dispute this, with the National Osteoporosis Society saying there is no conclusive evidence that coffee causes bone loss, but still advising people to drink no more than five cups a day.

six cups of coffee

Pro: Drinking six or more cups of coffee a day reduces the risk of skin cancer by 31 percent, according to research from Wayne State University in Detroit. The researchers believe this may be because antioxidants in coffee protect skin cells.

Cons: Drinking so much coffee may cause dehydration because coffee causes fluid loss. In addition, the loss of minerals and vitamins will also be accelerated-of which the loss of vitamin B6 is the most serious, and B6 plays a vital role in preventing kidney stones.

In addition, drinking six or more cups of coffee also causes the body to release hormones related to anxiety and stress, causing irritable bowel syndrome and raising blood pressure, which increases the risk of cardiovascular disease.