Q. Why does tea cause gas and belching?
Doctor Answer is medically reviewed by SecondMedic medical review team.
While tea is generally considered a soothing beverage, it can indeed contribute to gas and belching in some people. Here are some reasons why:
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Lower Esophageal Sphincter (LES) Relaxation: Tea, especially black tea, can contain caffeine, a stimulant that may relax the LES [1]. This muscular valve acts as a one-way gate between the esophagus and stomach. When relaxed, stomach contents, including gas and acid, can flow back up into the esophagus (GERD) [2]. This can irritate the esophagus, causing belching as a reflex to expel the gas and relieve discomfort.
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Tannins: Tea, particularly black and green varieties, are rich in tannins. These are astringent plant compounds that can irritate the digestive tract [3]. This irritation can lead to increased gas production by gut bacteria or hinder proper digestion, causing trapped gas and belching.
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Swallowing Air: Certain tea-drinking habits can unintentionally increase air intake, leading to belching:
- Drinking too quickly: Rushing through your tea can cause you to swallow excess air.
- Drinking from large mugs: Using a larger mug may encourage gulping down the tea, leading to more air intake.
- Drinking while stressed: During stressful moments, you might hyperventilate, swallowing more air with each sip.
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Sensitivity to Specific Teas: Some people may have a sensitivity to certain types of tea. For example, green tea contains a small amount of lactose, which can cause digestive issues like gas and bloating in individuals with lactose intolerance [4].
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Underlying Digestive Issues: In some cases, tea consumption might worsen existing digestive problems that cause gas and belching, such as irritable bowel syndrome (IBS) or small intestinal bacterial overgrowth (SIBO). Tea's potential to relax the LES and irritate the gut could exacerbate these conditions.
Tips to Reduce Gas and Belching with Tea:
- Limit Caffeine Intake: Opt for decaffeinated tea or herbal teas naturally low in caffeine.
- Sip Slowly and Mindfully: Savor your tea, taking smaller sips to avoid gulping air.
- Choose the Right Tea: Consider switching to green tea or herbal teas like peppermint or ginger, which may have soothing properties for the digestive system.
- Drink After Meals: Tea might be better tolerated after a meal when the digestive system is already working on processing food.
- Identify Sensitivities: Pay attention to how your body reacts to different types of tea. If you experience gas and belching consistently with a particular variety, consider avoiding it.
If gas and belching persist despite these measures, consult gastroenterologist professional to rule out any underlying medical conditions.