Is it good to chew and eat tea leaves after brewing?

Dec 09, 2025 Source: Cainiu Health

Dr. Huang Yuhong

Introduction

Occasionally chewing clean, unspoiled used tea leaves is harmless, but tea leaves that are spoiled, contaminated, or from strongly brewed tea should not be chewed. Used tea leaves that remain in good condition after brewing retain small amounts of components such as tea polyphenols and dietary fiber; occasional chewing will not adversely affect health and may help clean the mouth through mastication. Such tea leaves must be confirmed free of added flavorings during brewing and show no signs of mold, off-odors, or other deterioration.

Generally, chewing on used tea leaves that are clean and free from spoilage is not a cause for concern. However, tea leaves that are spoiled, contaminated, or brewed into strong tea should not be chewed. If in doubt, it is advisable to consult a healthcare professional beforehand. Detailed explanations are as follows:

Used tea leaves that remain in good condition after brewing retain small amounts of components such as tea polyphenols and dietary fiber. Occasional chewing will not harm health and may even help clean the mouth through mechanical action. These tea leaves must be confirmed free of added flavorings during brewing and show no signs of mold, off-odors, or deterioration.

However, spoiled tea leaves may harbor harmful substances, while contaminated leaves could contain impurities. Tea leaves steeped into strong tea contain higher levels of caffeine and theophylline. Chewing under these conditions may irritate the gastrointestinal tract and cause discomfort. Long-term or excessive consumption may also affect sleep quality and digestive function.

Choose fresh, clean tea leaves. If chewing used leaves, do so only occasionally and in moderation. Discontinue immediately if gastrointestinal discomfort or sleep disturbances occur. Individuals with special health conditions should proceed with caution.

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How much tea consumption is considered moderate?

For adults, a moderate daily amount of tea is 5–10 grams of dry tea leaves, which can be steeped 3–5 times to yield approximately 200–500 milliliters of tea infusion. This quantity allows for the beneficial effects of tea polyphenols and caffeine while minimizing potential health risks. If discomfort such as insomnia, palpitations, or stomach pain occurs after drinking tea, medical attention should be sought promptly.

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Why does drinking tea cause a sore throat?

In general, sore throat after drinking tea may be caused by hot tea temperature, strong irritation from tea leaves, pharyngeal ulcers, acute pharyngitis, tonsillitis, or other reasons. If discomfort occurs, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. In daily life, control the temperature and strength of tea, choose mild tea varieties, maintain good oral hygiene, and rinse your mouth after meals.