According to the research of British pharmacologists, theophylline contained in tea can raise human body temperature, and tea can greatly weaken or even disappear the effect of cooling drugs. Therefore, patients with fever should not drink tea, let alone strong tea. After analysis, tea contains theophylline, caffeine and tannic acid. Theophylline and caffeine can excite the central nervous system, enhance blood circulation and accelerate the heartbeat. Drinking tea when you have a fever will increase the patient's body temperature and further aggravate the condition. Ginseng tea also has the function of exciting nerves, so it is not suitable for drinking. In addition, tannic acid in tea also has astringent effect, which will affect the body's perspiration and hinder normal heat dissipation. If the body's heat is not properly distributed, it will be difficult to lower the body temperature in time, thus affecting the recovery of the sick body. You should drink more warm water when you have a cold and a fever.

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Patients with hypertension can drink some light green tea.

Some friends with hypertension can drink green tea because it is light. The beneficial factors in green tea can also promote blood circulation, increase the elasticity of capillaries, and thus reduce the benefits of cholesterol.

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Heart disease patients are not suitable for drinking too strong tea.

If friends with tachycardia or patients with cardiac and renal insufficiency do not recommend drinking too much tea, the amount of tea should not be too much, because too much tea will increase the burden on the kidneys and heart, so it is recommended to drink less light tea.

People with diabetes can drink more strong tea.

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Because the symptoms of diabetic patients are hyperglycemia, weakness and thirst, green tea can not only lower blood sugar, but also relieve cough and enhance physical strength. You can drink more tea several times a day, so that the concentration of effective tea in your body will be higher.

Patients with urinary calculi are not suitable for drinking tea.

Everyone knows that patients with urinary calculi need to drink plenty of water to eliminate stones, which are caused by excessive accumulation of calcium oxalate in the body. Tea contains a lot of oxalic acid. If you drink tea, it will not help to eliminate stones, but will aggravate your condition, so drink more boiled water!