Health Issues Linked to the Use of Tea Bags: What You Need to Know
zeeshan abdullahShare
Tea is one of the most loved beverages worldwide, known for its soothing taste and numerous health benefits. But while the tea itself is natural and beneficial, the tea bag you steep it in may not always be as harmless as it seems. In recent years, researchers and health experts have raised concerns about how certain types of tea bags can negatively affect our health.
This blog highlights the key health issues associated with using tea bags and what you can do to stay safe.
1. Microplastics Release in Hot Water
Many modern tea bags—especially pyramid-shaped bags—are made from plastics like nylon or PET. When these bags are exposed to boiling water, they can release microplastics and nanoplastics into your tea.
Why this is a problem?
These plastic particles cannot be digested or broken down by the body.
Research links microplastics to:
- Inflammation
- Hormonal imbalance
- Digestive issues
- Potential long-term toxicity
A single plastic tea bag can release billions of microplastic particles into one cup.
2. Chemical Leaching From Bleached Tea Bags
Traditional paper tea bags are often bleached with chlorine to give them a clean, white look.
Possible health concerns:
-
Chlorine bleaching can create dioxins, harmful chemical compounds with potential cancer risks.
-
Continuous exposure, even in small amounts, may accumulate in the body.
-
Some people may experience allergies or digestive irritation.
This is especially risky when low-quality tea bags are used daily.
3. Presence of Epichlorohydrin
Some tea bags are treated with a chemical called epichlorohydrin, used to prevent the bag from breaking apart in hot water.
Health risks of epichlorohydrin:
- Potential carcinogen
- Can react with water to form 3-MCPD, a compound linked to kidney and reproductive issues
- Avoided by most premium tea brands, but still used in many low-cost options
4. Higher Tannin Levels From Tea Dust
Most tea bags contain tea dust or fannings, not whole-leaf tea.
Excess tannins can cause:
- Acidity
- Bloating
- Nausea
- Interference with iron absorption, especially in women
While tannins themselves are natural, the high concentration in bagged tea can be harsh for sensitive individuals.
5. Microbial Contamination
Tea bags stored improperly or made with low-grade materials may carry mold or bacteria, especially when:
- Stored in humid environments
- Left in open containers
- Packed without proper sterilization
This can cause:
- Stomach infections
- Allergies
- Digestive discomfort
6. Artificial Flavors & Additives
Many commercial tea bags include:
- Artificial flavors
- Sweeteners
- Preservatives
These additives may cause:
- Headaches
- Allergic reactions
- Skin sensitivity
- Hormonal imbalance (in rare cases)
7. Environmental Impact That Comes Back to Health
Tea bags made with plastic do not decompose easily. Over time, these plastics enter soil and water systems.
Eventually, microplastics return to our:
- Food
- Water supply
- Body
So, environmental waste created by tea bags indirectly becomes a human health issue.
How to Reduce Health Risks from Tea Bags
Choose unbleached, paper-only tea bags
Look for labels like “Unbleached,” “Non-chlorine,” or “Plastic-free.”
Switch to loose-leaf tea
This eliminates the bag entirely and gives the best flavor and health benefits.
Avoid boiling water for plastic-based bags
If unavoidable, use slightly cooled water (80–85°C) instead of full boil.
Check for pyramid or silky bags
These are often plastic-based, even if they look like mesh fabric.
Store tea bags in airtight, dry containers
This helps prevent microbial contamination.
Final Thoughts
Tea itself is healthy—rich in antioxidants, soothing, and energizing. But the tea bag used to brew it can sometimes introduce hidden health risks. By understanding the materials and chemicals involved, you can make safer and more natural choices.
Switching to loose-leaf tea, plastic-free tea bags, or unbleached options can help you enjoy your daily cup without worrying about what might be steeping along with it
About the Author
Zeeshan Abdullah is a Food Scientist, Nutritionist, and Entrepreneur with an MS from the University of Salford, England. He is also a guest speaker at several universities, sharing his expertise in food science, nutrition, and product development.