过多浸泡饮用铁观音会刺激胃酸和胃肠液增加，引起胃肠不适。特别是空腹喝浓茶铁观音，由于咖啡因的作用，往往会使心脏功能亢进，精神兴奋，有的人会彻夜失眠到天亮，这对于心脏病和高血压患者来说是值得注意的。
对于胃肠道不好的人来说，更担心引起胃溃疡和十二指肠溃疡。
饭前喝浓茶铁观音对胃有害。饭后喝浓茶铁观音，可能会加速中枢自主神经系统的刺激，加速肠胃消化。不一会儿，我们就会觉得饿，又想吃东西。
如果这个时候控制不住自己的耐心，在下一餐之前吃一堆零食饼干，那岂不是白费力气，减肥也无从谈起！
一般来说，正常人每天应该喝中等浓度的铁观音茶。一杯水三克茶就够了(大概一杯)。铁观音茶每杯冲泡三次为宜。一般人不宜喝太浓的茶，因为太浓的铁观音茶含有大量的咖啡因，会刺激神经，尤其是在晚上，喝浓茶会引起失眠。
患有心脏病、高血压、胃病、便秘、失眠、神经衰弱、甲亢和缺铁性贫血的人，喝浓茶等于“雪上加霜”，会引起肠胃不适。
正在哺乳期的女性不宜喝浓茶，因为茶叶中的多酚类物质对乳汁有收敛作用，影响乳汁分泌。
大量饮用浓缩铁观音茶可使心跳加快，可诱发和加重冠心病患者心动过速的病情
过多浸泡饮用铁观音会刺激胃酸和胃肠液增加，引起胃肠不适。特别是空腹喝浓茶铁观音，由于咖啡因的作用，往往会使心脏功能亢进，精神兴奋，有的人会彻夜失眠到天亮，这对于心脏病和高血压患者来说是值得注意的。
对于胃肠道不好的人来说，更担心引起胃溃疡和十二指肠溃疡。
饭前喝浓茶铁观音对胃有害。饭后喝浓茶铁观音，可能会加速中枢自主神经系统的刺激，加速肠胃消化。不一会儿，我们就会觉得饿，又想吃东西。
如果这个时候控制不住自己的耐心，在下一餐之前吃一堆零食饼干，那岂不是白费力气，减肥也无从谈起！
一般来说，正常人每天应该喝中等浓度的铁观音茶。一杯水三克茶就够了(大概一杯)。铁观音茶每杯冲泡三次为宜。一般人不宜喝太浓的茶，因为太浓的铁观音茶含有大量的咖啡因，会刺激神经，尤其是在晚上，喝浓茶会引起失眠。
患有心脏病、高血压、胃病、便秘、失眠、神经衰弱、甲亢和缺铁性贫血的人，喝浓茶等于“雪上加霜”，会引起肠胃不适。
正在哺乳期的女性不宜喝浓茶，因为茶叶中的多酚类物质对乳汁有收敛作用，影响乳汁分泌。
大量饮用浓缩铁观音茶可使心跳加快，可诱发和加重冠心病患者心动过速的病情
Excessive soaking and drinking Tieguanyin will stimulate the increase of gastric acid and gastrointestinal fluid, causing gastrointestinal discomfort. In particular, drinking Tieguanyin, a strong tea on an empty stomach, often leads to hyperactivity of the heart and mental excitement due to the effect of caffeine. Some people will lose sleep all night until dawn, which is noteworthy for patients with heart disease and hypertension.
People with poor gastrointestinal tract are more worried about causing gastric ulcer and duodenal ulcer.
Drinking strong tea Tieguanyin before meals is harmful to the stomach. Drinking Tieguanyin, a strong tea after a meal, may accelerate the stimulation of the central autonomic nervous system and accelerate gastrointestinal digestion. Soon, we will feel hungry and want to eat.
If you can't control your patience at this time and eat a bunch of snack cookies before the next meal, wouldn't it be a waste of effort and you can't talk about losing weight!
Generally speaking, normal people should drink moderate concentration of Tieguanyin tea every day. A glass of water and three grams of tea is enough (about one cup). It is advisable to brew Tieguanyin tea three times per cup. Generally, people should not drink too strong tea, because too strong Tieguanyin tea contains a lot of caffeine, which will stimulate nerves, especially at night. Drinking strong tea will cause insomnia.
People suffering from heart disease, hypertension, gastropathy, constipation, insomnia, neurasthenia, hyperthyroidism and iron deficiency anemia, drinking strong tea is "adding insult to injury" and will cause gastrointestinal discomfort.
Lactating women should not drink strong tea, because polyphenols in tea have astringent effect on milk and affect milk secretion.
Drinking a large amount of concentrated Tieguanyin tea can make the heart beat faster, and can induce and aggravate tachycardia in patients with coronary heart disease.