Indeed, the extremely low levels of lead allowable under California’s Proposition 65 regulation are based on research showing accumulation in brain tissue and subsequent cognitive impairment in offspring. Some companies undertake their own stringent testing and third-party testing to ensure tea is lead-free.Īfter all, if you’re drinking green tea for its health benefits, you don’t want to be worrying that it might actually harm your health or, if you’re pregnant, the health of your fetus. Happily, many in the tea industry have recognized the problem of heavy metal contamination and are taking steps to ensure safety. Certain fungicides and pesticides commonly used in China might also contribute to lead levels in tea, but coal burning and residual lead in soils seem to be the bigger contributors to lead in tea. Roadside dust is still contaminated with lead even two decades later. In China, leaded gasoline was only banned in 2000.
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