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Arsenic for tea blurb5/25/2023 ![]() ![]() Of trace minerals, only manganese levels were found to be excessive in some black teas. Teas contained several beneficial elements such as magnesium, calcium, potassium, and phosphorus. No mercury was found at detectable levels in any brewed tea samples. Aluminum levels were above recommended guidelines in 20% of brewed teas. ![]() 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. Results were compared to existing preferred endpoints. 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. ![]() Common off-the-shelf varieties of black, green, white, and oolong teas sold in tea bags were used for analysis in this study. Increasing concern is evident about contamination of foodstuffs and natural health products. ![]()
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