The knowledge of drinking coffee takes stock of the taboos of drinking coffee.

Many people know that drinking coffee has a refreshing effect, but what should we pay attention to when drinking coffee? Many people have overlooked this point. Do you know what taboos about drinking coffee? You must be careful if you love coffee!

There is also great knowledge in drinking coffee.

1. Avoid drinking coffee when smoking. The caffeine in coffee, under the action of nicotine and other inducing substances in cigarettes, is easy to change some tissues and cells of the human body, and even induce cancer.

two。 Avoid drinking coffee when you are nervous. Drinking caffeinated drinks when you are nervous will increase tension, increase your heart rate, raise blood pressure and increase cholesterol.

3. Avoid coffee when drinking. Drinking liquor with caffeinated beverages will aggravate the damage of alcohol to the human body. Both alcohol and caffeine have exciting and inhibitory effects on the brain, turning the brain from extreme excitement to extreme inhibition, stimulating vasodilation, accelerating blood circulation, and greatly increasing the burden on the heart.

4. Avoid drinking coffee when you are newly married. Excessive consumption of caffeinated beverages by newlyweds will directly hurt sperm and affect men's fertility.

5. People with calcium deficiency avoid drinking coffee. Studies by foreign researchers have shown that drinking two cups of coffee drinks will lose about 15 milligrams of calcium in the body, so people who often drink this drink should eat more calcium-rich foods such as meat, bean products, shrimp skin, kelp, Laver, fungus and so on.

6. People with hyperlipidemia avoid drinking coffee. Men who regularly drink caffeine drinks have much higher blood cholesterol than non-drinkers, especially the increase in low density lipoprotein associated with atherosclerosis, which has the effect of promoting atherosclerosis. women who often drink coffee have slightly higher blood cholesterol than normal people.

7. Old people avoid drinking coffee. People need calcium supplements all their lives, and the elderly have more serious calcium deficiency. Coupled with less food intake, they do not absorb much calcium every day, which is far from metabolic needs. The diuretic effect of caffeine can reduce the calcium absorbed by half. If the elderly often drink coffee drinks, it will aggravate the lack of calcium in the body and cause osteoporosis.

8. Children avoid drinking coffee. Children's ADHD is related to the frequent drinking of caffeinated beverages. Drinking more such drinks can cause mood irritability, lead to undiscipline, decline in academic performance, and so on.

9. Avoid drinking too much coffee. The downside of drinking coffee is that it has a strong excitatory effect, and 10 grams of caffeine is enough to kill an adult. Therefore, if you drink a lot of coffee in a short period of time, it is likely to cause poisoning.

10. Iron should not be taken with tea, milk and coffee. Because the milk contains high phosphorus, it can affect the absorption of iron. Tannic acid in tea and coffee reduces iron absorption by 75%. It is appropriate to send the service with lukewarm water.

11. The tannic acid in tea and coffee reduces calcium absorption. Therefore, the best time to drink tea and coffee is to choose between two meals.

twelve。 Caffeinated drinks and foods can cause nausea, vomiting, headache and rapid heartbeat after being consumed by pregnant women. Caffeine also enters the fetus through the placenta, affecting fetal development.