Abstract

In the context used by most consumers, tea is a beverage consisting of an infusion of processed and dried tea leaves. Human exposure to trace elements from tea consumption depends upon the trace element content of commercially produced teas, the transfer of these elements into the tea infusion, and the bioavailability of the elements in the human system. The transfer of trace elements into a tea infusion can be highly variable. As tea is a source of both essential and toxic elements, the intake of tea in the human diet can be beneficial or harmful. Bioavailability studies have shown that tea can be a useful source of some essential elements in the human diet and that moderate amounts of tea consumption is unlikely to have any harmful effect on healthy individuals. However, excessive consumption of tea can result in a person exceeding the allowable elemental intake for some elements.

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