Is drinking coffee good for teenagers 18 .

Pros and cons of drinking coffee.

The main stimulant contained in coffee is caffeine. In addition, it contains fats and minerals such as magnesium, potassium, and copper, as well as B vitamins, aromas, and toxins. That said, coffee doesn't have any nutritional value, but it has many pros and cons on the body due to the effects of caffeine.

1.Beneficial effects of drinking coffee on the body:

For the nervous system: Caffeine has the effect of stimulating the brain, can eliminate the feeling of laziness, make people feel relaxed and happy, can make people concentrate, think quickly and evoke memory. Caffeine has been shown to speed up calculations and computers, and can make car drivers move quickly.

But there is no scientific evidence to prove that caffeine has an effect on improving the quality of work.

For cardiovascular: Drinking coffee can increase the heartbeat, increase blood pressure, promote blood circulation, and enhance myocardial contraction.

For the urinary system: caffeine can dilate the blood vessels of the kidneys and increase the blood flow of the glomeruli, thus increasing the water penetration and detoxification function of the kidneys, which can be said to have a diuretic effect.

For the respiratory system: Caffeine relaxes the smooth muscles around the trachea, which dilates the trachea and increases the volume of breathing. However, caffeine should not be used as a drug for clinical ** asthma.

2.Effects of Coffee Drinking on Physical Ills:

Drinking a lot of coffee can affect appetite and may cause vomiting and cramps, as well as gastritis and a thick tongue coating, which can make the body feel tired and weak.

Drinking a lot of coffee increases urine output, harms the bladder, and may cause urinary tract infections.

Too much caffeine in the body has a negative effect on the nervous system, causing insomnia, shaking hands, and slurred speech.

The latest research shows that when breastfeeding women drink coffee, caffeine can enter the child's body with the milk, making the child irritable and unable to sleep.

Coffee is a risk factor for those with heart disease and high blood pressure. Studies done in the United States have shown that drinking coffee can worsen heart disease and high blood pressure. The daily intake of caffeine must be controlled within 200 mg, that is, no more than 3 cups of coffee per day.

Coffee should never be given to children, and you are advised not to give coffee to teenagers under the age of 15. Try not to drink coffee or drink less coffee after the age of 40. The latest animal experiments suggest that caffeine may be a carcinogenic factor.

Breastfeeding women should not drink coffee.

Excerpt from "Reference News").

It's not good, even adults don't drink too much.

If children drink coffee regularly, it may cause ADHD, and children should not drink coffee with tea in their daily life, if they drink coffee with tea, it will reduce the body's absorption of calcium. If children drink like this, it is likely to lead to a lack of calcium.

Disadvantages of drinking too much coffee.

Drinking coffee every day may cause your nerves to be excited, and you will not be able to sleep when it is time to go to bed, resulting in a lack of energy when you wake up the next day, so that you will not be able to devote yourself to the next day's work. Therefore, don't drink coffee every day, drinking a cup of coffee every day is bad for the body, it is best to drink coffee occasionally, you can't overdo anything in the world, too much, even if you can't eat too much every day, let alone coffee, a relatively high calorie drink.