Take 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 overlooked this point. Do you know what coffee is forbidden? Coffee lovers should be careful!

1. Avoid coffee when smoking. Caffeine in coffee, under the action of nicotine and other inducing substances in cigarettes, is easy to cause changes in certain tissues and cells of the human body, and even induce cancer.

2. Avoid coffee when you are nervous. Drinking caffeinated beverages during times of stress can increase stress, causing a faster heart rate, higher blood pressure and cholesterol levels.

3. Avoid coffee when drinking. Liquor and caffeine-containing drinks drink together, will aggravate the damage of alcohol to the human body. Alcohol and caffeine both have exciting and inhibitory effects on the brain, causing the brain to turn from extreme excitement to extreme inhibition, stimulating vasodilation, accelerating blood circulation, and greatly increasing the burden on the heart.

4. Avoid coffee when you are married. Newlywed men drink too much caffeine, which will directly harm sperm and affect men's fertility.

5. Calcium deficiency people avoid drinking coffee. Studies by foreign researchers have shown that drinking two cups of coffee drinks will lose about 15 mg of calcium in the body, so people who often drink this drink should eat more meat, bean products, shrimp skin, kelp, seaweed, agaric and other calcium-rich foods.

6. High blood fat people avoid drinking coffee. Men who regularly drink caffeine drinks have much higher cholesterol in their blood than those who do not drink, especially the increase in LDL associated with atherosclerosis, which has the effect of promoting atherosclerosis. Women often drink coffee and their blood cholesterol is slightly higher than normal people.

7. Older people avoid coffee. People need calcium supplements throughout their lives, and the elderly are more seriously deficient in calcium. In addition, they eat less and absorb less calcium every day, which is far from the metabolic needs. The diuretic effect of caffeine can reduce the absorption of calcium by half. If the elderly drink coffee regularly, it will aggravate the lack of calcium in the body and cause osteoporosis.

8. Children avoid coffee. Children's hyperactivity disorder is often associated with caffeinated beverages. Drinking such beverages can cause irritability, resulting in indiscipline and decreased academic performance.

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

10. Iron should not be taken with tea, milk or coffee. Because milk is high in phosphorus, it can affect iron absorption. Tannin in tea and coffee reduces iron absorption by 75%. It should be taken with warm boiled water.

11. Tannic acid in tea and coffee reduces calcium absorption. Therefore, tea and coffee time, it is best to choose between two meals.

12. Caffeine-containing beverages and foods, pregnant women drink a lot, nausea, vomiting, headaches, rapid heartbeat and other symptoms. Caffeine can also enter the fetus through the placenta and affect fetal development.