Benefits and harms of coffee you should know

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Coffee has many health benefits but if consumed in excess can leave negative effects.

Coffee is the favorite drink of many people around the world. The global estimate consumes nearly 2.25 billion cups of coffee a day.

Coffee is good for health

Mental alertness: Drinking coffee and caffeinated beverages helps increase alertness and activity more effectively.

Reducing the risk of colorectal cancer: Some studies show that drinking more than 3 cups of coffee a day can significantly reduce the risk of colorectal cancer.

Preventing Parkinson’s disease: There is evidence that people who drink caffeinated beverages like coffee, tea, cola reduce the risk of Parkinson’s disease.

Preventing gallstones: Providing at least 400 mg of caffeine daily may reduce the risk of developing gallstones.

Preventing type 2 diabetes: Drinking coffee with caffeine significantly reduces the risk of developing type 2 diabetes. Studies show that Japanese adults who drink 3 cups of coffee a day reduce their risk of developing the disease. type 2 diabetes compared to people who drank only one glass a day or 42% less.

Reducing gout: Coffee reduces gout symptoms by reducing blood uric acid levels. Drinking 4-5 cups of coffee a day reduces the risk of gout by 40%.

Ảnh: inhabitat

Unwanted effects of coffee

Coffee with caffeine can cause insomnia, stress and restlessness. Drinking a lot of coffee will boost the production of stress hormones like cortisol, epinephrine and norepinephrine. These chemicals increase heart rate, blood pressure and stress. Caffeine consumption may increase blood pressure in people who already have high blood pressure.

Many acids found in coffee beans can irritate the stomach and small intestinal mucosa. Drinking coffee on an empty stomach can stimulate the stomach to increase acid secretion. Drinking coffee can also irritate the small intestinal mucosa, cause diarrhea, irritable bowel syndrome.

Acid reflux and heartburn can be caused by coffee due to the way it relaxes the lower esophageal sphincter (these sphincter muscles close after eating to prevent food and acid in the stomach from overflowing).

Kết quả hình ảnh cho tác hại của cà phê

There is some concern that drinking more than 5 cups of coffee a day may not be safe for people with heart disease. For people without heart disease, drinking a few cups a day does not seem to increase the risk of developing heart disease.

Coffee may be safe for pregnant women to drink 2 cups of coffee a day or less. However, drinking more can increase the risk of miscarriage, premature birth, low birth weight.

Drinking 1 or 2 cups of coffee a day is safe for nursing mothers and babies, but large amounts of caffeine can irritate the digestive tract, cause difficulty sleeping and discomfort.

Coffee is not safe for children. The side effects associated with caffeine are usually worse in children than adults.

Drinking caffeinated coffee can increase the amount of calcium that is passed through the urine. This can weaken bones. If you have osteoporosis, limit caffeine consumption to less than 300 mg per day (about 2-3 cups of coffee).