What's the advantage of drinking coffee? What's coffee?

First, the benefits of drinking coffee:

1. Can prevent cancer and fight cancer.

The polyphenols in coffee are strong antioxidants. Drinking some coffee every day has a certain effect on cancer prevention and anti-cancer.

Women who drank more than three cups of caffeinated coffee a day had a 21% lower risk of basal cell cancer than those who drank less than one cup a month. Caffeine can also inhibit tumor growth.

If women drank four or six cups of coffee a day, the incidence of breast cancer would be reduced by 25 percent, 70 percent, even for women with a family history of breast cancer. This is because coffee can reduce the production of carcinogenic estrogens.

2. Protect the liver

In recent years, there is growing evidence that coffee can reduce the risk of liver cirrhosis and liver cancer. Coffee is rich in polyphenols that also protect the liver. Patients with hepatitis are advised to drink some coffee every day, which is good for the repair of liver cells.

Drinking coffee can help people with heavy drinking, overweight, diabetes or iron overload reduce the risk of liver disease, but there is no evidence that coffee and tea can reduce the risk of chronic liver disease from fatty liver or viral hepatitis.

3. It can relieve exercise soreness.

Drinking two cups of coffee after exercise can help relieve muscle soreness. Drinking coffee can help people relieve muscle pain caused by excessive exercise, according to a study. Although caffeine has the effect of relieving exercise pain, it is often only effective for people who do not drink coffee very often.

4. Good for the skin

Coffee accelerates the metabolism of skin, accelerates the discharge of waste cutin and weakens the dark circles under the eyes caused by poor circulation; in addition, regular drinking coffee can keep skin cells full of vitality, prevent cell oxidation and anti-aging.

5. Prevention of depression

People who drink coffee regularly will feel happy and restless, and their mood will be improved. When you are upset or depressed, having a cup of coffee can really calm your mind.

6. It can relieve alcohol.

Chlorogenic acid in coffee can prevent alcoholism. Drinking coffee after drinking alcohol will quickly oxidize the acetaldehyde converted from alcohol, decompose it into water and carbon dioxide and discharge it out of the body.

7. Drink coffee after a meal to nourish the stomach and aid digestion

Drinking coffee after a meal is good for stomach health. But on the other hand, if you drink coffee in the empty stomach, the secretion of gastric juice will damage the gastric mucosa, which in turn damage the health of the stomach.

People who love meat had better have a cup of coffee after dinner, which has a good effect on relieving grease and aiding digestion. In addition, the content of soluble dietary fiber in coffee is higher than that in orange juice, and caffeine can stimulate intestinal peristalsis. Therefore, drinking coffee has the effect of relieving constipation.

8. Radiation injury can be prevented

Radiation injury has become a prominent pollution and harm at present. Especially the radiation of household appliances: such as people who operate computers for a long time, microwave ovens, televisions at home, and so on. Especially for pregnant women (pregnant women's food) radiation has affected the health of the next generation (health food). Some studies do show that coffee may help prevent radiation damage.

9. Prevent cholelithiasis

Some studies have suggested that caffeinated coffee stimulates gallbladder contraction and reduces cholesterol, which is prone to gallstones. Drinking coffee can reduce people's risk of developing the most common and painful form of gallstone disease.

Second, the disadvantages of drinking coffee:

Although drinking coffee is good, we should also pay attention to moderation. Drinking too much coffee will lead to many health risks.

Coffee can increase the risk of heart disease.

2. Cause nervousness. For people with anxiety disorders, caffeine can worsen symptoms such as sweaty palms, palpitations and tinnitus.

3. Coffee can cause blood pressure to rise and promote the contraction of blood vessel walls.

4. Induced osteoporosis caffeine itself has a good diuretic effect. If you drink a lot of coffee for a long time, it is easy to cause bone loss and adversely affect the preservation of bone mass.

Caffeine can increase gastric acid, and continuous high-dose intake can lead to peptic ulcers, erosive esophagitis and gastroesophageal reflux disease.

6. Caffeine poisoning includes addiction and a range of physical and psychological adverse reactions, such as nervousness, irritability, anxiety, tremors, muscle convulsions (hyperreflexia), insomnia and palpitations.

7. Caffeine also reduces women's chances of conception, increases the risk of miscarriage, and slows the development of the fetus.

Third, how to drink coffee to be healthy:

Don't drink coffee on an empty stomach.

Drinking coffee on an empty stomach is easy to stimulate the intestines and stomach, and it is easy to affect the absorption and digestion of stomach function. It will also affect the heart and increase the burden on the heart. Long-term drinking coffee on an empty stomach, for example, will be harmful to health. It is best to drink coffee after eating some bread and snacks.

2. Drinking coffee in moderation is good for your health

Coffee can eliminate fatigue, caffeine stimulates people's brain nerves, makes people more awake, and improves the efficiency of work and study. It will also have an impact on people's mood, making people happy and relaxed a lot. Coffee stimulates the intestines and stomach to accelerate peristalsis, speed up metabolism and supplement nutrition. Drink less and do more good. But drinking too much is bad for your health.

Try not to drink coffee in the afternoon

It's best not to drink coffee in the afternoon, especially for those who have difficulty falling asleep. Because after drinking coffee, the role of coffee in the body will be very long, especially in the elderly metabolism is slow, coffee stays in the body for a longer time. Caffeine causes nervous excitement and no sleepiness at all.

4. Drinking coffee correctly can help you lose weight

Drinking coffee can help you lose weight, but be sure to drink it at the right time. Having a cup of coffee half an hour after lunch can promote digestion and accelerate the decomposition of fat, and it will be better to have a cup of coffee before going to work and then walk. Of course, do not add sugar to the coffee, once the effect of adding sugar is almost zero. Drink coffee should also be moderate, excessive consumption of coffee not only can not achieve the effect of weight loss, coffee has a certain amount of nutrition may also be aggravated.

5. Don't drink coffee when smoking and drinking

Don't drink coffee when smoking or drinking. Drinking coffee, tobacco and coffee when smoking will stimulate blood vessels, causing hardening of blood vessels and increasing the burden on the heart. While drinking alcohol has an exciting effect, coffee also has an exciting effect, drinking with people is too exciting. Drinking coffee while drinking and smoking can cause damage to the heart and, in severe cases, can cause palpitations and heart disease.

6. Drinking espresso is not healthy

Drinking too much espresso can easily precipitate melanin and cause skin problems such as yellow face and freckles. The high content of espresso makes people too nervous, and long-term drinking may cause neurological insomnia. Although espresso also has certain benefits, it is OK for normal people to drink it, but it must be harmful to health if people with diseases drink it. In particular, people with poor cardiac and gastrointestinal functions must control their intake of espresso.

Fourth, you should pay attention to drinking coffee:

1. The body's daily caffeine intake within 300mg is safe, of course, it varies according to height, weight and physique, but generally speaking, there is no problem with 3 cups of high-quality coffee a day.

2. Coffee should not be drunk when the body has the following conditions or diseases: the elderly; diarrhoea; pregnancy; people with excessive stomach acid; developing children; women who are breastfeeding; before fasting (or before meals); people with vitamin B1 deficiency; people with mental illness; people taking tranquilizers; people with intestinal allergies; kidney patients whose potassium intake should be limited.