Some cardiovascular and cerebrovascular diseases the mistaken belief that drinking too much tea and no effect on the body, this is a misunderstanding. Tea contains theophylline, caffeine and a variety of volatile substances that would be obvious for the central nervous system excitatory effects, but the gall to promote cortical excitability, it would also lead to contraction of the brain blood vessels, resulting in brain blood flow is slow, insufficiency, may lead to thrombosis, which had suffered from cerebrovascular disease for people who are very dangerous.
In addition, more tea, from the excitement of cerebral vasomotor center is also able to increase the excitability of sympathetic nerve function in coronary artery, causing coronary artery contraction or spasm, leading to myocardial ischemia, likely lead to angina pain, chest tightness, palpitations, arrhythmia and a series of symptoms and even cause myocardial infarction.
Therefore, people with cardiovascular and cerebrovascular diseases can proper cup of tea, but must not drink too much, especially not to drink too much concentration of tea.
Related posts: