Many people like to drink coffee. They have a cup for breakfast, a cup when they are tired from work, a cup when they eat, a cup when they have a party with friends... In fact, netizens ask, does drinking too much coffee have any effect on the body? The main substance of coffee is caffeine. After drinking a cup of coffee, caffeine will be quickly absorbed by the stomach and intestines into the blood, and then reach all parts of the body, excitatory nerve substances will be released, and then a series of changes will occur in the body. So what will happen if you drink too much coffee?

Drinking coffee affects sleep quality

The results of a study found that consuming caffeine, even six hours before bedtime, is significantly detrimental to sleep. They say that if people want to get a good night's sleep, they should try to avoid consuming caffeine after 5pm. Experts said: "Most people experience insomnia after drinking coffee in the evening. This study shows that consuming caffeine in the afternoon and evening definitely has a negative impact on the quality and quantity of sleep."

Drinking too much coffee can cause high blood pressure

The main ingredient in coffee that affects blood pressure is caffeine. The effects of caffeine on the human body vary depending on the concentration and total amount consumed.

Coffee in moderate concentration and quantity can stimulate the human brain, invigorate the spirit and relieve fatigue; it also has a weaker effect on the heart and diuresis. Coffee contains a high content of polyphenol compounds, which are powerful antioxidants that can delay the oxidation time of low-density lipoprotein by up to three times, and has a certain effect of protecting the cardiovascular system.

However, if the dose is increased, caffeine directly excites the respiratory center and vasomotor center, causing breathing to deepen and speed up, and blood pressure to rise. Therefore, it is generally believed that a moderate amount of coffee will not aggravate hypertension, and drinking a cup of coffee after breakfast will not increase blood pressure.

It should be noted that: do not drink coffee after drinking alcohol, so as not to increase the burden on the heart and blood vessels; do not drink too strong or too much coffee, otherwise it will make people irritable or insomnia, which can also easily aggravate the symptoms of high blood pressure.

Drinking too much coffee will increase blood lipids

Studies have shown that after conducting experiments on 1,007 men and 589 women, it was found that men who drank more than five cups of coffee a day had higher plasma cholesterol than those who did not drink coffee, especially an increase in low-density lipoprotein, which is related to arteriosclerosis, and therefore tend to promote arteriosclerosis.

In the female group, the amount of coffee consumed was relatively small, and the plasma cholesterol was only slightly higher than that of the average person, and the amount of high-density lipoprotein, which has the effect of preventing arteriosclerosis, increased. Therefore, drinking too much coffee will increase blood lipids and easily promote arteriosclerosis; if consumed in moderation, it will not cause any harm, and may even have certain benefits. As for drinking tea, studies have shown that it will not increase blood lipids, so it can be drunk with confidence.