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Mostly no—dry tea bags stay safe past dates, but staleness rises; toss any that are moldy, damp, or smell off.

Yes, cold tea bags can briefly reduce eye puffiness via cooling and caffeine; they don’t fix root causes or treat infections.

No, plain tea bags are gluten-free; flavored blends or barley-based infusions can contain gluten or carry cross-contact risk.

Yes, certain plastic or heat-sealed tea bags can shed microplastics into hot tea, with risk driven by material, seal, and brewing conditions.

Yes, many modern tea bags can shed microplastic when steeped, though material and design determine how much.

Yes, many tea filters use food-grade materials and may carry residues; choosing plastic-free paper or loose-leaf limits extra exposure from the bag.

Yes—Taco Bell Refrescas include tea-based options with about 51 mg and energy versions with 200 mg of caffeine.

Yes, unsweetened herbal tea contributes to daily water intake and hydrates like plain water.

Yes, tea can stain teeth; darker brews with more tannins discolor enamel faster than lighter types.

No, tea bags don’t carry a true expiry date; they lose aroma and quality after the best-by window.