Drinking tea immediately after a meal has negative health effects
Drinking tea immediately after or during a meal negatively impacts health by significantly reducing dietary iron absorption due to polyphenol and tannin binding, which increases the risk of iron deficiency anemia.
Multiple clinical and observational studies demonstrate that the polyphenols and tannins present in tea bind to iron when consumed with food, severely inhibiting iron bioavailability and contributing to iron deficiency anemia over time. No provided papers refute this finding.
Meryem Lazrak, K. El Kari, Nicole U. Stoffel, L. Elammari, A. Al-Jawaldeh, C. Loechl, Abdelhakim Yahyane, A. Barkat, M. Zimmermann, H. Aguenaou. Tea Consumption Reduces Iron Bioavailability from NaFeEDTA in Nonanemic Women and Women with Iron Deficiency Anemia: Stable Iron Isotope Studies in Morocco.. 2021. https://doi.org/10.1093/jn/nxab159
Tea consumption with a meal significantly reduced iron absorption by over 85% in both nonanemic and IDA women due to polyphenol content.
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Cagri Baris Gunec. A Mini Review on The Relationship Between Coffee And Tea Consumption And Iron Absorption in The Gut – Iron Deficiency Anemia. 2023. https://doi.org/10.47363/jjcmr/2023(3)145
Consuming black tea or coffee with meals increases the risk of iron deficiency anemia by inhibiting iron absorption in the gut via polyphenols.
Irma Susan Paramita, Hesti Atasasih, R. Afifah. The Relationship of Tea Consumption Habits with Incidences of Anemia in Adolescent Girls at Pekanbaru City. 2024. https://doi.org/10.25311/keskom.vol10.iss2.1883
Drinking tea at the same time as eating was significantly associated with the incidence of anemia among adolescent girls.
Hafiza Madiha Jaffar, Bahisht Rizwan, Al Noor Naseem, Umm-e-Habiba Asghar, Zabreen Ghalib, Iram Tariq, Gull e Raana Najeeb, Tania Arshad, Aisha Ahmed, Maryam Munir, Anum Azhar. Association Between Tea and Coffee Consumption and Symptoms of Iron Deficiency Among University Students. 2023. https://doi.org/10.54393/pbmj.v6i02.771
People who consume tea or coffee with meals are at higher risk of developing dietary iron deficiency because chelates hinder iron absorption from food.
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