I work the night shift. Is drinking coffee good for your health every day?

Advantages and disadvantages of drinking coffee The main exciting substance in coffee is caffeine. In addition, it also contains fat and minerals such as magnesium, potassium and copper, as well as vitamin B, aromatics and toxins. In other words, coffee has no nutritional value, but because of the role of caffeine, it has many advantages and disadvantages to the body. 1. The beneficial effects of drinking coffee on the body: on the nervous system: caffeine can excite the brain, eliminate the sense of laziness, make people feel relaxed and happy, make people concentrate, think quickly and recall the past. Studies have proved that caffeine can speed up people's calculation and computer play, and make car drivers more agile. But there is no scientific evidence that caffeine can improve the quality of work. Cardiovascular: Drinking coffee can make the heart beat faster, raise blood pressure, promote blood circulation and enhance myocardial contraction. For urinary system: Caffeine can dilate renal blood vessels and increase glomerular blood flow, thus increasing the water permeability and detoxification function of kidney. It can be said that coffee has diuretic effect. For the respiratory system: Caffeine can relax the smooth muscle around the trachea, thus expanding the trachea and increasing the breathing ability. But caffeine can't be used as a drug to treat asthma in clinic. 2. The influence of drinking coffee on the body Disadvantages: Drinking a lot of coffee affects the appetite, which may cause vomiting, convulsions, gastritis, thick and greasy tongue coating, etc., which will make the body feel tired and weak. Drinking a lot of coffee will increase urine output, damage the bladder and possibly lead to urinary tract infection. Too much caffeine in the body has a negative effect on the nervous system, which will make people insomnia, shaking hands and slurred speech. The latest research shows that when breast-feeding women drink coffee, caffeine will enter their children with their milk, making them fidgety and unable to sleep. Coffee is a risk factor for patients with heart disease and hypertension. American research shows that drinking coffee can aggravate heart disease and high blood pressure. Caffeine intake must be controlled within 200 mg per day, that is, no more than 3 cups of coffee per day. Never give coffee to children. I advise you not to let teenagers under 15 drink coffee. Try not to drink or drink less coffee after 40. The latest animal experiments show that caffeine may be a carcinogenic factor. Breastfeeding women should not drink coffee.