Most people can safely drink tea. However, like anything else, it's best in moderation. Drinking too much tea can lead to sodium imbalances and other issues. In extreme cases, it may even cause renal failure.
If you have kidney problems or other underlying health issues, it's a good idea to talk to your doctor before adding tea to your regular diet. Very hot drinks have been linked to oral and throat cancers, so consider letting your cup of tea cool a bit before taking a sip.

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