What are the advantages and disadvantages of drinking coffee? What is the difference between adding sugar and not adding sugar?

1. Benefits of drinking coffee

Because caffeine stimulates the central nervous system and muscles, it can cheer up, enhance thinking ability, and restore muscle fatigue. Acting on the cardiovascular system, it can improve heart function, dilate blood vessels, and promote blood circulation. For the gastrointestinal system, it can aid digestion and help break down fat.

1. Helps lose weight

Caffeine can indeed accelerate the decomposition of fat, but at the same time, it requires muscle exercise to convert excess fatty acids into heat energy and consume it. Without coordinated exercise, excess fatty acids flow back along the bloodstream and accumulate fat again. Therefore, you need to be active at the same time after drinking coffee to achieve the real weight loss effect! Coffee itself has calories, but not much. The main calories come from the creamer and sugar you add when drinking coffee.

2. Antioxidant ability

A recent research report pointed out that coffee contains 4 times more antioxidants than tea, and is more effective in fighting cardiovascular disease, and coffee itself is also in line with The principle of antioxidant, color (dark) and bitter taste. The amount of antioxidants contained in each type of coffee is also different due to the brewing method. For example, Americano contains the least amount of antioxidants, while Espresso contains the most antioxidants. Adding creamer to coffee will not affect its antioxidant effect.

3. Improve dry eyes

Foreign reports point out that coffee drinkers are significantly less likely to suffer from dry eyes than non-coffee drinkers. This is mainly related to the purine component in coffee (purine-containing eye drops can stimulate the glands to secrete liquid, which has a certain protective effect on the eyes). This is of course good news for computer users who love to drink coffee, but it should be noted that coffee itself has a diuretic effect. Even if some of its ingredients have a protective effect, it is not suitable for people who already suffer from dry eye syndrome, and People who take any medicine containing diuretic ingredients must avoid taking caffeinated drinks to avoid exacerbating the loss of water in the body.

4. Can relieve pain

Pain caused by non-organic factors such as headache caused by not sleeping well at night, or pain caused by vasoconstriction on the temple side. , can be relieved with coffee, but it must be drank in the morning or noon (note: prohibited from afternoon to night).

5. Amount of coffee

Although coffee is good for the human body, you should not drink too much. It is appropriate to drink no more than 2 cups a day. For people who are prone to stress and anxiety, drinking too much Maybe it's harmful.

6. Time to drink coffee

It is best to drink coffee after breakfast and lunch, because this can promote gastrointestinal motility, help digestion, and can break down the high-calorie, High-fat foods will not irritate the gastrointestinal tract like drinking coffee on an empty stomach. It is best not to drink coffee after dinner, as it may affect your sleep. If you want to drink coffee to stay up all night, you may drink too much without knowing it, which is not good for your health.

2. Disadvantages of drinking coffee

1. Adding chaos when you are nervous

Caffeine helps improve alertness, sensitivity, memory and concentration. But drinking more coffee than you are used to will produce the same dose of stimulants that can cause jitteriness. For people prone to anxiety disorders, caffeine can worsen symptoms such as sweaty palms, heart palpitations, and tinnitus.

2. Exacerbating high blood pressure

Because of its own analgesic effect, caffeine is often compounded with other simple analgesics. However, if you take it in large amounts for a long time, if you already have high blood pressure, When your blood pressure is high, using large amounts of caffeine will only make your condition worse. Because caffeine alone can increase blood pressure, and if coupled with emotional stress, it will have a dangerous multiplicative effect. Therefore, people at risk of high blood pressure should especially avoid drinking caffeinated drinks when they are under high work pressure. . Some people who have the habit of drinking coffee all year round think that they are immune to the effects of caffeine. However, this is not the case. A study shows that after drinking a cup of coffee, blood pressure can increase for up to 12 hours.

3. Induces osteoporosis

Caffeine itself has a good diuretic effect. If you drink coffee in large amounts for a long time, it will easily cause bone loss and have a negative impact on the preservation of bone mass. Adverse effects, for women, may be an increased threat of osteoporosis. But the premise is that people who usually lack enough calcium in their food, or people who don’t move often, plus postmenopausal women, lose calcium due to lack of estrogen. These conditions plus a lot of caffeine , may pose a threat to the bone. If you can enjoy it in a reasonable amount, you can still avoid eating due to choking.

3. These people should drink coffee with caution

1. Patients with liver disease

Caffeine will prolong the time it takes for caffeine to be metabolized in the body. Generally, it takes 2 hours for normal adults to metabolize caffeine. However, for patients with liver disease or liver dysfunction, the metabolism of caffeine may take 4-5 hours. Therefore, patients with liver disease must be careful when drinking coffee. It is best not to Drink it after evening to avoid affecting sleep due to long metabolism time, and it is best not to exceed 1 cup a day.

2. Patients with digestive system diseases

The reason why coffee is on the list is because the tannic acid in it stimulates gastric acid secretion. Patients in the acute stage of digestive diseases must avoid it. . After recovering from health, if you drink coffee occasionally, it is best to drink it after meals and avoid drinking coffee on an empty stomach.

3. Pregnant women

Many women will pay special attention to all the food they eat after pregnancy. Of course, drinks containing caffeine are also listed as one of the taboos. This is mainly because pregnant women metabolize caffeine slowly, and the time that caffeine stays in the body is extended. The fetus in the abdomen cannot clear caffeine from the blood through metabolism until the fetus is eight or nine months old.

4. Children

Due to the incomplete development of children’s liver and kidneys and poor detoxification ability, the half-life of caffeine metabolism will be prolonged. Therefore, generally speaking, children under 12 years old are Caffeine consumption needs to be banned. Even Europeans and Americans who drink coffee like boiled water all day long have strict restrictions on children drinking coffee.