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why does green tea make me feel sick

Green tea is an infusion of the often slightly withered, unfermented leaves of the Camellia sinensis plant. The infusion process -- basically soaking the tea leaves in hot water -- brings out chemicals with potent antioxidant properties that are in the green tea leaves. Green tea also contains other chemicals, including caffeine, that are responsible for its stimulating effects on the body. While many cultures consider green tea to be a vital part of maintaining good health, you may find that drinking it can cause digestive problems. A common cause of stomach irritation from drinking green tea is its caffeine content. Green tea is not fermented like black tea or oolong tea, so typically it has a lower amount of caffeine, but it can still cause an upset stomach. Caffeine increases the amount of acid in the digestive process, which can cause pain and nausea, particularly if you are sensitive to caffeine or if you take it on an empty stomach.

Caffeine also cause dizziness, headaches and diarrhea, notes the National Center for Complementary and Alternative Medicine website. In addition to caffeine, the polyphenols present in green tea can also cause the same irritation in the digestive lining. Ironically, while these chemical compounds can be useful in treating and preventing hyperlipidemia, hypertension, atherosclerosis and some types of cancer, according to the Memorial Sloan-Kettering Cancer Center, the polyphenols in green tea leaves include tannins, which are acids that can cause nausea and gastrointestinal distress. Another possible cause of upset stomach could be the use of dairy products, such as whole milk, in your green tea. Milk contains a sugar called lactose, which many people cannot digest well. In rare instances, an upset stomach can be caused by an allergic reaction to the tea leaves.

Allergies, however, are typically accompanied by other symptoms including a swollen mouth or swollen lips, hives or throat closure. Drinking green tea only after eating may help reduce the symptoms of an upset stomach because the increased acid production is buffered by the food. Consuming decaffeinated green tea can also help if caffeine is the problem, while drinking tea without dairy products may help if you are lactose-intolerant. Using a substitute, such as a soy-based creamer, might also be of benefit. If you notice you still have an upset stomach after trying these solutions, an herbal tea without caffeine, tannins or dairy products might also be a viable solution. Stop drinking green tea if you notice signs of an allergic reaction. If the reaction is severe, consult a qualified health practitioner immediately.
According to Medline Plus, nausea is the sensation of having an urge to vomit.

Common causes of nausea are viral infections, medication, motion sickness, migraine headaches, morning sickness, food poisoning and allergies. Can drinking green tea cause nausea? Yes, green tea contains caffeine and polyphenols. Both compounds have been known to cause nausea. Caffeine can cause insomnia, anxiety, irritability, upset stomach, nausea, diarrhoea and frequent urination in some people. Tea also stimulates the production of gastric acid, resulting in indigestion. Indigestion is often described as a feeling of fullness, bloating, nausea or gassy discomfort in the chest or abdomen. The symptoms develop during meals or shortly afterwards. Tea can also be a problem for those prone to heartburn and stomach ulcer. Heartburn results when gastric acids rise up and spill into the oesophagus, causing irritation. Learn how to drink tea without upsetting the. Back to Back to Home

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