Side effects and harms of drinking too much black tea

When feeling tired, many people will immediately think of drinking a cup of tea Tea is the second largest beverage in the world, next only to water Many people like to drink black tea because of its low calories Black tea contains caffeine, glucuronic acid, lactic acid, potassium fluoride, manganese, tannic acid, purine, xanthine and gallic acid ester Black tea was introduced to the market in 1827, when it was called caffeine because it was a new substance Later it was found that it had the same effect as coffee and contained the same ingredients as coffee Since then, the name caffeine has been given up Black tea can effectively promote energy level and improve alertness Therefore, people who stay up late often like to drink black tea to keep their concentration This is because black tea can stimulate respiratory and cardiovascular habits This in turn promotes the supply of oxygen to all parts of the body Black tea is also good for weight loss When drinking black tea, it can suppress appetite The result is that you eat less and lose weight Black tea also has anti-cancer effect Although black tea has so many advantages, it should be avoided to drink too much, otherwise it will cause some side effects Nutritionists always remind people not to consume too much caffeine When caffeine intake is too much, it will cause dyspnea, insomnia, irregular heartbeat and other adverse reactions Here are some common side effects of drinking too much black tea Anemia: if you have iron deficiency anemia, drinking black tea will make your condition worse So people with anemia should avoid black tea Crispy bone: black tea is full of caffeine, which will increase the amount of calcium excreted through urine This can cause bone fragility and osteoporosis due to the loss of calcium in the body To avoid this problem, make sure you don't eat more than 300 milligrams of caffeine a day This means drinking no more than 2-3 cups of black tea every day Constipation if you drink too much black tea, it will cause constipation This is because black tea contains tannins Tannic acid is good for health and helps the body store sediment and other benefits However, excessive intake of this nutrient will cause the body to start accumulating a lot of garbage, which will cause constipation It is not recommended to drink black tea for patients who have just recovered from a heart attack, as well as for patients with acute cardiovascular diseases such as paroxysmal tachycardia or heart attack asthma This is because caffeine is not good for the cardiovascular system In addition, gastritis or gastroenteritis patients are not suitable for caffeine, because both of these diseases can lead to increased gastric acid Diabetes if you are diabetic, drink black tea carefully Black tea is said to affect blood sugar levels One of the main ingredients of diarrhea black tea is caffeine, so drinking it every day may cause diarrhea This is because caffeine has an irritating effect on the digestive system Therefore, when drinking too much black tea, it will bring adverse effects on health Drinking too much black tea will also have a negative impact on the central nervous system, making people neurotic, and will lead to insomnia, varicose veins, palpitation and digestive problems due to excessive excitement Interfering with the arrival of caffeine in gastrointestinal black tea will produce a variety of acidic substances If the body can't absorb all these acids, it will start to feel sick If you have gastric ulcer or cancer, you must limit the amount of black tea, otherwise it will further aggravate the disease Overactive bladder drinking black tea can also make the bladder overactive This is obviously not a good thing for people who already have this disease Health experts recommend that pregnant women drink no more than two cups of black tea a day The reason is that coffee is rich in caffeine, which increases the risk of miscarriage If it's a nursing mother, don't drink too much black tea, otherwise it will lead to baby allergy and frequent defecation People with glaucoma, cardiovascular disorders, anxiety and high blood pressure also suffer from drinking black tea because it contains caffeine Compared with other tea varieties, black tea has the highest caffeine content This is mainly related to the processing Therefore, if you want to get the maximum benefit from drinking black tea and avoid the harm, you should ensure appropriate consumption.