What is the best time to drink coffee? Disadvantages of drinking coffee: Drinking coffee at irregular times is harmful to health

Coffee (scientific name: Coffea arabica), also known as coffee tree, Arabic coffee, etc., is the national flower of Yemen. Before the 6th century AD, Yemen was always called Arabia, so the coffee trees transported from them to other places were also called Arabic coffee trees. The name coffee comes from the Arabic word "Qahwah", which means plant beverage. Later, when coffee spread to all parts of the world, it was named after its place of origin "Kaffa". It was not until the 18th century that it was officially named "coffee".

1. The best time to drink coffee

Coffee contains caffeine, which will stimulate the sympathetic nerves after entering the body, thereby eliminating sleepiness, improving blood circulation, and making the body feel warmer and less tired, so it has a "refreshing" effect. However, the stimulation and excitement of the sympathetic nerves have a negative effect on appetite, that is, the appetite will decrease, so drinking coffee before a meal will make you feel less like eating. In addition, due to the stimulation of the stomach, the secretion of gastric juice increases, which stimulates an empty stomach and is not good for patients with gastric ulcers. This can be said to be a negative effect of coffee. However, if you drink it after a meal, the secretion of gastric juice will increase, so it helps digestion. Therefore, there is absolutely no problem drinking it after a meal.

In addition, some people think that adding some milk to drink can alleviate its stimulating effect, but how much can a small amount of milk neutralize the caffeine? Unless it is half milk and half coffee, mixed into coffee milk or milk coffee, it may have some effect. For example, coffee milk drunk at breakfast, because there is more milk than coffee, even if it is drunk on an empty stomach, it still has the effect of relieving gastric juice. The best way is to drink it after a meal, then it is beneficial and harmless.

Since allergies are caused by the excitement of the parasympathetic nerves, which can lead to asthma or allergic rhinitis, if the sympathetic nerves can be stimulated and the parasympathetic nerves can be inhibited, it will help prevent the onset of allergies. Especially for patients with severe allergies, some minor triggers can cause physical discomfort, and the psychological fear of allergies often makes it out of control.

Therefore, it is recommended to take advantage of the benefits of caffeine and drink a cup of coffee before an allergy or asthma attack (the patient can feel it themselves), which has a preventive effect. In addition to the stimulating effect of caffeine, the patient has a psychological sense of security that "he has already drunk coffee", and is less likely to have an attack. Of course, as the saying goes, "too much is as bad as too little", no matter how good something is, it should be "stopped in moderation".

Otherwise, whether you drink it before or after meals, excessive caffeine will cause side effects such as palpitations (heartbeats), even mental confusion, and unstable walking. Be careful. Excessive consumption of caffeinated beverages can easily cause kidney stones. In principle, two to three cups of coffee a day is appropriate. If you drink four or five cups, most people will feel nauseous, so be careful. In principle, no matter what kind of stimulating beverage, it is best not to drink more than three cups a day.

2. Do not drink too much coffee

In the case of long-term intake, high doses of caffeine are a drug that can lead to "caffeine poisoning". Caffeine poisoning includes addiction and a series of physical and psychological adverse reactions, such as nervousness, irritability, anxiety, tremors, muscle twitches (hyperreflexia), insomnia and palpitations. (Most people take caffeine for its stimulating effect. Many students take caffeine pills when preparing for exams and those working night shifts. Under the strict definition of addiction, only gradually increasing dosage is addiction, and caffeine dependence is more appropriate, but under a widely accepted definition, all chronic and difficult to get rid of behaviors are called addiction, so caffeine addiction can also be described.) In addition, because caffeine can increase stomach acid, continued high-dose intake can cause peptic ulcers, erosive esophagitis and gastroesophageal reflux disease. However, because both regular and decaffeinated coffee irritate the gastric mucosa and increase gastric acid secretion, caffeine may not be the only ingredient in coffee.

Four caffeine-induced psychiatric disorders confirmed by the Diagnostic and Statistical Manual of Mental Disorders (4th edition) include caffeine overexcitation, caffeine anxiety disorder, caffeine sleep disorder and other caffeine-related disorders.