1, a health reminder for drinking coffee
(1) Drink after breakfast.
Enjoying a cup of fragrant coffee in the morning light has opened a brand-new day for many people. But it should be reminded that it is best to drink coffee after breakfast, because drinking on an empty stomach may cause irritation to the stomach and is not good for your health.
(2) Drink less three-in-one coffee
Experts pointed out that considering the cost, a cup of 5 yuan coffee with a price of 10 yuan usually does not use better quality coffee beans. As for three-in-one coffee, most of them are made of coffee essence or coffee seasoning powder, which can't make good use of coffee beans, and the added sugar and creamer have higher calories.
(3) Smell before drinking.
Experts remind that when drinking coffee, don't swallow it, but smell it close to your nose first. If it smells spicy, it means that coffee beans are not fresh. After passing the smell test, take a sip of coffee in your mouth, taste it gently with your tongue and slowly swallow your throat. If it tastes clean and bright, the aroma is full and pleasant, and the body has no adverse reactions, it is a good cup of coffee.
(4) Replace creamer with fresh milk.
For the sake of health, it is suggested to replace creamer with fresh milk and add less sugar to avoid offsetting the original benefits of coffee.
(5) Special people should pay attention to
It is suggested that diabetics drink decaffeinated coffee instead; And people who have hyperlipidemia symptoms themselves, it is best to drink follicular coffee instead; As for patients with hypertension, we should pay attention to the time of drinking coffee and try not to drink coffee after getting up in the morning, so as to avoid blood pressure rising too high at once.
2. The harm of drinking too much coffee
1, heart
Caffeine acts on the heart in two ways: it not only affects the brain center that regulates the cardiovascular system, but also directly affects the heart. High dose of caffeine can increase the heart rate of people who are intolerant of caffeine 10-20 beats/min, and may lead to transient arrhythmia in some people.
Therefore, moderate consumption of caffeinated beverages (up to 500 mg per day on average) will not greatly increase the risk of heart disease, but exceeding this dose may increase the risk of myocardial infarction.
2. Kidney
It is common for many people to fall in love with the toilet after drinking coffee in the morning. This is because caffeine affects adenosine receptors in the kidney and acts as a diuretic. Caffeine may also slow down the brain's release of an antidiuretic hormone, which reduces urine production.
3. Digestive system
The acidity, oil and caffeine in coffee may stimulate gastric mucosa and promote gastric acid secretion. Drinking caffeinated drinks for a long time can lead to stomach problems.
4. Respiratory system
Caffeine and similar drugs have two effects on breathing. One is to increase the breathing frequency. In addition, 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.
5. Reproductive system
Studies have shown that babies born to women who drink coffee during pregnancy have lower birth weight. Studies have also shown that caffeine intake (equivalent to drinking more than one cup of coffee a day) may significantly reduce the chances of pregnancy in women.
6. Eyes
Caffeine will shrink (narrow) the microvessels of the eyes, thus reducing the nutrients entering the cells of the eyes, and also reducing the speed of removing wastes from the eyes.