ArticleJournal of toxicology2013
The benefits and risks of consuming brewed tea: beware of toxic element contamination.
Article in Journal of toxicology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
19 citing papers in PubMed.
- Innovations in Herbal Functional Beverages: From Green Formulation and Bioactivity Preservation to Sensory Optimization and Regulatory Safety.Food science & nutrition · 2026Review
- Mineral infusion andFrontiers in nutrition · 2026Article
- Melatonin-Mediated Regulation of Antioxidant Defense Enhances the Resistance of Tea Plants (Plants (Basel, Switzerland) · 2025Article
- Arsenic Exposure through Dietary Intake and Associated Health Hazards in the Middle East.Nutrients · 2022Review
- Detection of Changes in Total Antioxidant Capacity, the Content of Polyphenols, Caffeine, and Heavy Metals of Teas in Relation to Their Origin and Fermentation.Foods (Basel, Switzerland) · 2021Article
- Genome-Wide Identification and Expression Analysis of thePlants (Basel, Switzerland) · 2021Article
- Umbilical Cord Blood Metal Mixtures and Birth Size in Bangladeshi Children.Environmental health perspectives · 2021Article
- Assessment of essential and non-essential elements in selected traditional medicines from India, Ghana and China.Environmental science and pollution research international · 2021Article
- Hypermanganesemia Induced Chorea and Cognitive Decline in a Tea Seller.Tremor and other hyperkinetic movements (New York, N.Y.) · 2020Article
- Exploring community evolutionary characteristics of microbial populations with supplementation ofJournal of the Taiwan Institute of Chemical Engineers · 2020Article
- Heavy metal contamination of prenatal vitamins.Toxicology reports · 2018Article
- Elemental Characterization of Romanian Crop Medicinal Plants by Neutron Activation Analysis.Journal of analytical methods in chemistry · 2017Article
- Predictors of mercury, lead, cadmium and antimony status in Norwegian never-pregnant women of fertile age.PloS one · 2017Article
- Is there a relationship between tea intake and maternal whole blood heavy metal concentrations?Journal of exposure science & environmental epidemiology · 2016Article
- Association of green tea consumption with mortality from all-cause, cardiovascular disease and cancer in a Chinese cohort of 165,000 adult men.European journal of epidemiology · 2016Article
- Rapid detection of talcum powder in tea using FT-IR spectroscopy coupled with chemometrics.Scientific reports · 2016Article
- Maternal tea consumption and the risk of preterm delivery in urban China: a birth cohort study.BMC public health · 2016Article
- Preconception Care: A New Standard of Care within Maternal Health Services.BioMed research international · 2016Review
- Determination of heavy metals in the soils of tea plantations and in fresh and processed tea leaves: an evaluation of six digestion methods.Chemistry Central journal · 2016Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background. Increasing concern is evident about contamination of foodstuffs and natural health products. Methods. Common off-the-shelf varieties of black, green, white, and oolong teas sold in tea bags were used for analysis in this study. Toxic element testing was performed on 30 different teas by analyzing (i) tea leaves, (ii) tea steeped for 3-4 minutes, and (iii) tea steeped for 15-17 minutes. Results were compared to existing preferred endpoints. Results. All brewed teas contained lead with 73% of teas brewed for 3 minutes and 83% brewed for 15 minutes having lead levels considered unsafe for consumption during pregnancy and lactation. Aluminum levels were above recommended guidelines in 20% of brewed teas. No mercury was found at detectable levels in any brewed tea samples. Teas contained several beneficial elements such as magnesium, calcium, potassium, and phosphorus. Of trace minerals, only manganese levels were found to be excessive in some black teas. Conclusions. Toxic contamination by heavy metals was found in most of the teas sampled. Some tea samples are considered unsafe. There are no existing guidelines for routine testing or reporting of toxicant levels in "naturally" occurring products. Public health warnings or industry regulation might be indicated to protect consumer safety.
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.