Organic tea, celebrated for its health benefits, may not be quite as clean as we'd like to think. That, at least, is what a study by French consumer magazine "60 Millions de Consommateurs" suggests, after detecting residues of chemical substances, including pesticides, in tea bags. Even at trace levels, the presence of chemical compounds on tea leaves raises real questions. Here's a closer look at the issue of pesticides in tea.
Tea: the world's favourite drink
Organic teas and conventional teas alike rank as the second most consumed beverage in France and around the world, surpassed only by water. Around 6 million tonnes of tea leaves, whether black tea or green tea, are consumed globally each year. While consumption is truly worldwide, production is concentrated in just a handful of countries, primarily China and India.
Pesticides in tea, and more besides...
Often held up as a model of healthy drinking, are green and black teas really as wholesome as their reputation suggests? The magazine "60 Millions de Consommateurs" took a close look, and the findings were far from reassuring. According to their conclusions, many tea bags sold in France contain toxic substances: pesticides, heavy metals, and various chemical compounds.
Pesticides in tea
To understand why pesticides end up in tea, it helps to know that tea leaves are not washed at any point during processing. As with many food crops, tea has become increasingly affected by chemical contamination. Studies have shown that black teas and mint-flavoured green teas can contain notable or multiple pesticide residues. The most commonly identified pesticides in contaminated teas are folpet and anthraquinone.
Heavy metals in tea
Unfortunately, plant contamination is rarely straightforward. A so-called cocktail effect can occur when several different chemical pollutants are present together, even in trace amounts. The "60 Millions de Consommateurs" analysis also flagged heavy metal contamination in a number of teas. Mercury and arsenic were the main culprits, found most often in green teas.
Other chemical pollutants in tea
The tests used by the magazine to assess the safety of various teas also revealed that some teas contain additional pollutants and toxic substances. While the detection of pyrrolizidine alkaloids came as little surprise to specialists, the presence of polymers shed from tea bags, and mineral oils originating from packaging labels, raises more unsettling questions.
The health risks of pesticides
These toxic substances, whether pesticides or other contaminants, are present only in small quantities. But tea is a daily drink, and when exposure is chronic, consumers are right to question the cumulative impact on their health. Most of these substances are now classified by the World Health Organisation as endocrine disruptors or potential carcinogens. All the more reason to choose a cleaner product, one where quality and safety can be genuinely assured.
Is organic tea truly pesticide-free?
Pesticide contamination is not solely a matter of farming practice. Decades of widespread use have left water sources and soils partially contaminated, making it impossible to guarantee a completely pesticide-free organic tea. That said, studies consistently show that organic teas contain significantly lower residue levels. Despite the occasional trace of chemical residue, organic tea, whether green or black, remains a leading choice among health-conscious consumers.