It turns out that drinking coffee has this benefit, I didn’t know it before…

Speaking of the favorite drinks, besides wine, coffee and tea are probably the most popular. Many people love to drink coffee. They drink a cup at work, a cup when they stay up late, a cup when they study, and a cup to refresh their minds and not feel tired! Drink a cup when you have nothing to do, and drink a cup when you get together with friends, and you will feel happy and excited!

However, there are many controversies about whether coffee is good or bad for the human body. Some people say that coffee is harmful to health, while others say that drinking coffee is good for health. What is the truth?

(from ssyer.com)

Scientific research tells us: Coffee can prevent cancer? !

In 2015, the U.S. Dietary Guidelines Advisory Committee stated that drinking coffee in moderation (3 to 5 cups a day) is healthy; in 2016, the World Health Organization not only removed coffee from the list of possible carcinogens, but also included coffee in the list of cancer-preventing drinks.

For those who love coffee and have to have two cups every day, this is great news. You can continue to drink coffee with confidence and can drink coffee more recklessly. You can confidently tell others, "I drink coffee for health!"

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Oropharyngeal malignancy

Compared with drinking ≤1 cup of coffee per day (about 125 ml per cup), drinking more than 3 cups of coffee per day can reduce the risk of oropharyngeal malignancies by approximately 31% to 37% .

Esophageal cancer

A survey of Asian people showed that drinking more than three cups of coffee a day can reduce the risk of esophageal cancer by about 33% to 36% .

Gastric cancer

Compared with non-coffee drinkers, drinking a small amount of coffee every day can significantly reduce the risk of gastric cancer by 7% , while 3 to 4 cups of coffee a day can significantly reduce the risk of gastric cancer by 12% .

Colon cancer

The effect of coffee on colon cancer is relatively weak. Every increase of 4 cups of daily intake can significantly reduce the risk of colon cancer by about 7%.

Cirrhosis and liver cancer

In general, compared with not drinking coffee, drinking coffee can reduce the risk of cirrhosis by about 27% to 39% and the risk of liver cancer by about 34% to 43% . Drinking an extra cup of coffee a day can reduce the risk of liver cancer by 15% to 27%.

Even for patients with chronic viral hepatitis (hepatitis B and hepatitis C), this effect of coffee is still significant.

(from ssyer.com)

Coffee is good, but don't drink too much

Although coffee has all the benefits mentioned above, it should be consumed in moderation. Even if it is water, drinking too much may cause water poisoning! Therefore, no matter how good something is, it should be consumed in moderation. In addition, coffee has some side effects that we cannot ignore.

What are the side effects of coffee?

The caffeine in coffee mainly acts on the central nervous system (such as the brain). On the one hand, it can put the brain in a state of high alertness, which manifests as active thinking, mental excitement, and elimination of sleepiness. On the other hand, it increases the sense of comfort by increasing the level of dopamine in the brain, which manifests as emotional stability, good mood, and increased sensitivity to the outside world.

At the same time, coffee can also increase heart rate, breathing, blood pressure, gastric acid secretion, urine volume, and fatty acids in the blood. Drinking coffee before bedtime may also affect sleep. Therefore, for people who already have high blood pressure, coffee may not bring the benefits they imagine.

For those who are particularly sensitive to coffee, drinking a cup of coffee may speed up their heartbeat, make them feel energetic, and make them unable to sleep all night. The harm of poor sleep to health is far greater than the anti-cancer effect of coffee. Therefore, for those who are sensitive to coffee, it is better not to drink too much.

In addition, long-term and excessive drinking of coffee (about 8 to 9 cups a day) may also lead to symptoms such as anxiety, depression, gastric ulcers, and insomnia.

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References

Romualdo GR, Rocha AB, Vinken M, et al. Drinking for protection? Epidemiological and experimental evidence on the beneficial effects of coffee or major coffee compounds against gastrointestinal and liver carcinogenesis. Food Res Int, 2019.